Mara was one of my high school students. She was a cute, smiley, dedicated pupil who excelled and got accepted to a good college. I recalled giving her an A on many of her math and physics exams.

About a week before the end of her senior year, during a recess, Mara approached me and asked shyly, "Dr. Esposito, I'd like to have a 10 minute talk with you. When is the best time for you?"

"I don't think we can do it here. Is it OK to have it in Starbucks or in the food court in the mall? If we are lucky, we may find a quiet place and talk."

"That is fine. Are you free this afternoon?"

I had other plans, but I noticed Mara was anxious to discuss an important subject and postponed the errand.

We met at the Starbucks that was 2 blocks from my house. I arrived 5 minutes early and saw Mara arriving on foot. Her long brown hair was tied in a nice ponytail. She wore long pants and a simple long-sleeved blouse. As she came closer, I stood up, extended my hand to her and said, "Hi Mara, I'll go and order a drink for us. What would you like?"

"A simple latte will do, thank you."

Five minutes later, I returned to our table with her latte and my black coffee. I sat down, gazed at her, and asked, "So, what can I do for you?"

She hesitated momentarily and then blurted, "Teach, you were by far the best instructor I had in high school. I owe you my success in getting accepted to Stanford."

I was stunned, "Girl, I always knew you were good, but getting to Stanford is much more than good. Congratulations!"

"Thank you. The reason I wanted to have this talk is that getting into a good school is one thing, but excelling in university is a whole different story. I think I'll need additional help."

"What kind of help you are talking about?"

"About a year ago, you gave us a 2 hour lecture on basic astronomy. Since then, I've read about the subject and fell in love with it. My intentions are to take Physics major and from there, go to astronomy. From what I know, you have a PhD in Physics, and astronomy is a hobby of yours, right?"

I grinned, "Yes."

"I don't know if you have spare time, but I'd like you to give me private physics lessons that will help me be more successful in my first year."

I glanced at her pretty face, "Mara, why do you think you need private lessons? You are smart and will do well without them."

"You may be right, but I want to ensure better results. Getting to Stanford was a wonderful surprise, and I have no intention of blowing my chances. Your physics knowledge is amazing and more importantly, you are a fantastic teacher..."

"Mara, thanks for the compliments. I have 2 private students I tutor twice a week and can make room for another one. Is two 1.5-hour lessons a week what you had in mind? That way, we can go over your curriculum and make sure you understand and feel comfortable with the material in class."

Mara smiled, "That will be awesome. However, there is a hitch. I live with a single mother, and our money is tight. How much will the lessons cost?"

"Girl, I am not rich and never cared much about money. How much will you be comfortable paying?"

"I checked online and prices range between $30 and $70 an hour. I'll be very grateful if you charge me $30 each time..."

"$30 it is. When would you like to start?"

"The earlier, the better."

"Can we do it Tuesday and Thursday, both times starting at 6 pm?"

"Perfect. Thank you very much."

"Let me give you my cellphone and address."

She grinned, "I found out your address. I live down the road from you, probably 200 yards away. Due to the steep slope of our street, I realized I could see your house from my window."

"Good. It means you can walk to my house and won't need to drive."

I gave her my phone number. We agreed to meet on Tuesday and separated soon after.

Tuesday afternoon, Mara showed up on time. She seemed nervous, and I wanted to calm her down. I offered her coffee or tea. She chose green tea. I operated the kettle, and until the water boiled, I showed Mara my place. It was on top of a hill, a 2-floor, 3 bedroom house. She looked at the copied pictures obtained by the Hubble telescope I placed on my living room walls and murmured, "These photos are the reason I wish to become an astronomer." Next I took her to my bedroom, where my small telescope was aiming at the sky. She closed the distance and cheered, "Dr. Esposito, I see you are well prepared for the evening sky."

"It's not always in the bedroom, but these days both Venus and Mars can be seen close together, and I'd love to watch them."

"Great idea. I heard the best time to observe the planets will be just before morning. Do you mind if I change the direction of the telescope?"

"Go ahead. What are you trying to see?"

Mara didn't answer. She aimed the lens down, and a couple of minutes later, she called me to watch. I looked through and saw it focused on a small house downhill. She said, "That is my house."

I stared again. The house was unimpressive and had a small patch of lawn in front. A large window with closed curtains was in the middle of a yellow colored wall.

I chuckled, "I assume the window is to your bedroom. The yellow colored wall is unusual."

Mara smiled, "Yes, it is. It was yellow when we bought the house. We never found the time and motivation to paint it in a different color."

"The water is boiling. Let me make our teas, and we can start the lesson."

I came back with tea and some cookies and said, "I looked at Stanford's physics curriculum for freshmen like you and after placement, the beginning concentrates on material we already covered in 11th and 12th grade, like dynamics, thermodynamics, and electromagnetism, as well as newer concepts like wave-particle duality. I suggest to start with the first 2 and see how comfortable you are with the material. Then we'll move on."

Mara agreed, "Dr. Esposito, your idea sounds like the best way to go about it. I trust you completely."

"Let's make a deal. You had to address me as Dr. Esposito in school. Over here I'd rather you call me by my first name, Leon. OK?"

She grinned, "Thank you,... Leon."

For the next 60 minutes we worked on a few concepts in dynamics. Mara's knowledge was great, and we moved on to elaborate on thermodynamics. Before leaving for home, she placed $30 on the table and said, "Leon, I loved the way you started tutoring me. Everything was methodical and clear. Thank you for helping me and accepting less than the usual fee."

"That's OK, Mara. It's a pleasure to teach such a smart young lady. See you again on Thursday. BTW, if you have binoculars, look at Mars and Venus. They should be seen closest to each other and brightest around 5 am."

"I will. Good night."

I set my alarm clock for quarter to 5 and went to sleep. I am a morning person and it wasn't a big deal for me to wake up when it was still dark outside. I brushed my teeth, combed my hair, made a black coffee, and sat in front of my telescope.

I could clearly see the bright colored Venus and the reddish Mars. I wondered if Mara was watching the sky too and aimed the telescope at her window. The curtains were open, and I saw a shadow of a person. The light in her room was low and behind the person, so I could not see details, but I assumed it was her. She hardly moved.

I aimed again at the planets and took several photos of them. I stayed for 15 minutes and then directed the device at Mara's window one more time. I saw the shadow moving toward the light in her room. Mara was wearing a sheer nighty, and near the light for a short time I could see her perky breasts and flat tummy. Her body was flawless! My dick stirred.

I went back to bed upset at myself; Mara was my physics student, and I got excited watching her figure... For god sake, she was only 19, 13 years my junior! I tried to sleep but was unable. Her beautiful figure floated before my eyes and refused to disappear. After almost a full hour, I gave up, dressed, and started working in my small yard.

Thursday afternoon, Mara arrived with a cake in her hands, "Leon, I cannot pay you much more, but I can bake. This is a chocolate cake I made earlier. I hope you like it."

I chuckled. She seemed offended, and I grabbed the cake from her, "You don't understand. I love chocolate cakes. In fact, I think I am addicted to chocolate. How did you guess?"

She smiled, "The cookies you served last time had chocolate in them, so I assumed you'd like it."

"Your observation was correct. Tell you what; If I buy a similar cake at the supermarket, it will likely cost $15 or $20, so by the end of this lesson, instead of $30, leave only $10."

She whispered, "Leon, you are too good to me. It's not fair. I have to pay you somehow..."

I laughed, "It's a pleasure to teach a good student. Money is less important to me."

Mara eyed me for a moment and murmured, "Money is not everything in life, but it is still needed to cover expenses. Anyway, if I continue enjoying our lessons, I intend to make it up to you."

The next hour and a half we went over thermodynamics, and again, she demonstrated good knowledge. Except for minor errors, she did great. Before she left, I asked Mara how she liked to watch Mars and Venus. She grinned, "You were right. It was lovely. I've read we can see them again tonight and tomorrow night. I plan to wake up and watch."

The following night was warm, and I slept with only my boxers on. Early morning I stayed in my underwear and looked in the sky. The planets changed their position slightly but were still impressive.

I aimed the telescope at Mara's window and saw her upper body. Unlike before, the light in her room was brighter and this time came from her side. Her transparent nighty revealed her gorgeous tits and dark nipples. Every couple of seconds her arms moved, and her mammaries swayed lightly under the loose material. I couldn't stop ogling her terrific tits. Venus and Mars lost their luster in comparison to these breath-taking twin peaks...

After 10 minutes of nonstop ogling her chest, I directed the telescope again at the sky for a short time before lowering it one more time at Mara's body.

About a minute later, Mara's face moved from the sky toward my house. I knew that without a magnifying device, she wouldn't be able to tell I aimed my telescope at her and continued observing her. With a smile, she moved slowly from her window, and returned to bed.

The following late night was the same. Mars and Venus were now further apart, yet still easily noticeable. I shifted the telescope to her house. Mara was in her window with her room fully lighted. I noticed her hand moving down fast. I couldn't care about her hand because her top was now exposed. Yes, she was topless!

I was puzzled; it was quite a warm night, but being topless was unexpected. The lens concentrated on her chest, and my eyes fixed on Mara's ample orbs. Her nipples looked pointy and hard. The sight was no longer just exciting. It became erotic and... tempting. My pecker expanded and extended in my boxers, and my palm caressed it. I was no longer thinking about the planets. Mara's naked chest filled my brain with naughty thoughts.

I aimed the instrument slightly higher and watched her face. Her eyes were shut, her lips parted somewhat, and her facial expression suggested extreme pleasure. Was the celestial view arousing her? It was nice, and even inspiring, but arousing?!...

As my mind was busy with these thoughts, my hand continued bobbing my tool and not long after, I ejaculated into the tissue I had.

My last girlfriend and I separated 7 months earlier. Until that night, I was jacking off on average twice a week, mostly fantasizing about sexual scenarios I had with my prior girlfriends. Doing it now while thinking about my current student was frightening and... rather exciting. I felt like a pervert, prying on Mara's privacy without consent, but I couldn't stop myself. The only 'consolation' was that Mars and Venus wouldn't be easily seen again for a few months, so she would no longer appear in her window. It was a relieving thought but a sad one too.

On Tuesday, Mara came for another physics lesson. As before, when I let her in, she smiled nicely. The only difference: This time instead of wearing pants, she had on a short skirt that exposed her shapely legs.

I brought coffee and cookies, and we began concentrating on physics. Once again Mara displayed adequate comprehension of thermodynamics, and we moved to electromagnetism. I noticed that in that subject, she missed some concepts and I explained them in 2 different ways. She got everything and grinned, "Thank you, Leon. You are a real treasure. What would I do without you?"

"You would read about it or use another tutor."

"I don't think you understand: There are many volunteers to tutor students like me, and some of them know the material very well. However, I haven't met somebody who can explain everything in simple terms quite like you."

I joked, "I get what you are saying. It means that next time, I should expect another treat containing chocolate."

She gazed at me and mumbled, "I'll do better than that."

I didn't want to push my luck and elected to leave the subject. When she was by the door, Mara turned to me, "Since you like astronomy, I am sure you know The Perseids will be best seen at the predawn hours. I love watching falling stars and will watch them starting 5 am until the sun comes up."

"I knew about the meteor shower. I didn't mention it because I thought after 3 interrupted nights, you wanted to have a good, long night's sleep."

"Leon, I chose to graduate in astronomy. This is my obsession and I do not wish to miss the opportunity to watch the best meteor shower of the year."

I caressed her arm and said, "I admire your dedication. See you Thursday evening."

I woke up at 4:45 am, made myself hot coffee and sat to watch the stars. I observed 3 'falling stars' in the first 5 minutes. Then I pointed the telescope toward Mara's window. I couldn't believe my eyes; she sat on the window frame with one leg outside, wearing only panties! The light source in her room was in front of her body, illuminating her chest. I ogled her magnificent breasts in profile. As Mara stared at the sky, I saw her holding a binocular in her hand. It didn't make sense: When attempting to get a better view of Venus and Mars, binoculars may help. But with meteor showers, the device is useless, because we can't tell exactly where in the sky the falling star will appear... I continued aiming at her sexy top and followed the mild bounce of her tits. Her nipples looked tiny and very stiff.

My hand crept to my erect cock, and I began masturbating. As my hand was working my pole, I directed the telescope at Mara's face. To my surprise, I saw her looking through her binoculars straight at me! When the lens was focused on her face, she smiled broadly and waved at me... I was shocked, and in an instance, aimed the telescope at the sky again. I stayed another 5 minutes, pretending to glance at the sky and then left the window.

I was confused. Yes, I behaved like a low-life voyeur, trying to get glimpses of Mara's beautiful breasts. However, she didn't seem like she was offended watching me ogle her. Why was she topless in the first place? Was she trying to tempt me? I had many questions and no clear answers. I was scared about our next meeting, the following day.

Mara rang the bell at 6 pm. I let her in, not knowing how to behave. She brought me a small bag with Belgian pralines.

I stuttered, "Maara, coffee as uusual?"

She gave me a million-dollar smile, "Yes, please."

As I was making the coffee, she moved behind me and whispered, "Leon, did you enjoy the show?"

My legs shook, and I responded, "Yes. The Perseids always give a perfect show."

She came closer, "And the other show?..."

"Mara, what are you doing?"

"Leon, stop pretending. I saw you aiming your telescope at my window the first night. When I moved away from the window, I noticed in the mirror that it was partially transparent. I wasn't sure if you aimed to see whether I looked at the planets or stared at my body, so the following night, I became bolder. I had my binoculars in my hand and once I looked through them at your window. You were clearly focusing on my chest. I threw the binoculars to the side and posed for you. Tuesday night, I felt your dedication to my studies deserved something from me too. So I posed for you in profile. The binoculars you saw in my hand were used only once: I saw your hand moving down and I assumed you were jacking off. Was I right?"

There was no way I could deny the truth. I blushed and gazed embarrassingly at her pretty face, "Mara, you are beautiful, both mind and body. Why were you playing with me?"

She moved closer still, and her covered tits pressed against my back, "Leon, dear. I liked you more than any teacher in high school. I was even convinced I was in love with you. You, of course, had no idea how I felt. The idea of getting private lessons came to me because I wanted to be near you. Your help in physics is highly appreciated, but at the same time, the more I learned about you as a person, I fell for you."

I turned around and looked at her face, "Mara, I like you. I like you a lot. And your body is perfect: Gorgeous, athletic and very sexy. But I am your teacher and I am older than you by 13 years."

"Officially you are no longer my teacher. And 13 years mean absolutely nothing. Al Pacino, Robert De Niro, Hugh Jackman, and many others are happily married with women who are MUCH younger than them."

"Girl, I am not a movie star..."

"What about the former French president, Nicolas Sarkozy, the former Brazilian president, Michel Temer who is 42 years older than his wife, and of course Donald Trump?"

"I give up."

"Much better. Now stop arguing, and please, kiss me."

"Mara, I wasn't ready for all that. Don't you think we first have to consider the consequences?"

"I do not. But you may. I think I should go home now. I'll skip the coffee and leave the pralines on the table. Today is Thursday. My next lesson is supposed to be next Tuesday. If you rather I won't show up, phone or text me the word NO. Otherwise, I'll be here, but not for physics. My body wishes to feel yours, and I think your body wants the same thing. So the only question is if your mind will accept it or not. Good night, and I really hope to see you next Tuesday." And then she left.

If I said I slept only 12 hours between Thursday and the following Tuesday, it would not be a lie. I had sleepless nights, occasionally dozing for an hour or two, dreaming about finding Mara in my bed or peeking at me through the window. Twice I even dreamt about having sex with her. Both times I orgasmed but woke up with cold sweat.

I was perplexed. I knew I wanted her. I had the urge to kiss her luscious lips, to have her in my arms, to conquer her amazing body. However, my super-ego rejected everything, telling me she was too young and naive and didn't know what she was doing. My conscience whispered, "She is not for you. Mara belongs with a young college student. You should find an older, more mature lady." I was torn.

On Tuesday, I tutored one of my other students and was distracted. He just giggled and commented, "Dr. Esposito, you have something else on your mind. I better go home and come back next time."

I mumbled, "You don't have to do it," but I was happy he left before I embarrassed myself.

I didn't contact Mara later. By 5 pm I shaved, showered, wore clean clothes and waited for Mara to show up, not knowing how to behave.

She knocked softly on my front door at 6:05 pm. I opened it and saw her wearing a short black dress with matching 3" heel shoes. Unlike before, her long hair was not arranged in a ponytail and framed her pretty face perfectly. Red lipstick decorated her full lips.

She smiled and said, "Leon, I am happy you did not call to cancel."

I glanced at her face and said in a low tone, "I still don't know what I am supposed to do. Until the last few days, my mind worked fine. But lately, it is playing tricks on me. I cannot sleep well or even think logically."

She approached me, took my hand in hers, lifted her face and pleaded, "Please, honey, kiss me."

I leaned into her and kissed her lips lightly.

Her face didn't budge. She shut her eyes and pouted her lips.

I kissed her again, somewhat longer. Then I felt her arms close above my neck, pulling me toward her. Next her lips parted, and her tongue licked my lips. Something happened to me at that moment, and I spread my lips too. Her little tongue penetrated my mouth and searched for mine. Without thinking what I was doing, my hands hugged her tightly, and I sucked on her sweet tongue. We stayed like that for a long moment as she moaned softly into my mouth.

Then her face disengaged from mine. She turned her back to me, and blurted, "Good boy. Will you please help me with the zipper?"

My mind was still foggy. I obeyed without thinking. I unzipped her dress all the way. Then she turned to face me and gingerly slipped the straps to the sides until the upper part fell, exposing her soft black bra. Mara watched my eyes as her hands gradually lowered the dress further. At last the dress landed on the carpet, and I saw her stunning body in her underwear. I was hypnotized and didn't move.

Next, she unclasped her bra and her breath-taking tits got free. They jolted forward, as if defying me to have a negative comment. Of course I didn't; first, I was mesmerized and my mouth was paralyzed, but more importantly, her 2 girls were the sexiest, most tempting I've ever seen.

Subsequently, she removed her black panties, and I noticed her neatly trimmed landing strip. She stood and her eyes explored mine for a moment. Then she whispered, "Leon, you ogled my body through the telescope, so you knew what to expect. Are you disappointed?..."

I woke up from my daze and blurted, "The opposite. You look much better now. You are pretty, and gorgeous, and beautiful, and..."

She mumbled, "Honey, you talk too much. Will you undress by yourself, or you want me to help you?"

Until then I didn't notice that my cock was steely-hard. After unbuttoning my shirt, I cautiously opened my fly, and my 7 incher thrust upward. Her eyes inspected it, and her lips grinned joyfully. Once I was done, Mara's hand caressed my shaft and she murmured, "I think we are ready. Let's go to bed."

I led her to my bedroom, still somewhat lightheaded. She lay on her back, spread her legs, and said, "Please, get over it and fuck me. I have waited long enough, and I am soaking wet down there."

I moved between her thighs, aimed at her opening, and started invading her pussy. As the mushroomed head felt her cunt, my brain cleared and my arousal shot up. I gazed at her pretty face and said, "Mara dear, your body is too sexy. Right now my only wish is to ravage it, and I apologize in advance."

She smiled, "No need to apologize. I want you to pound me hard. I want to close my eyes and cum while seeing stars!"

I began plowing her slowly, and gradually accelerated. I watched in awe her wildly bouncing tits, before cupping and then kneading them. Mara groaned and tried to pull me deeper into her. I intensified my drilling, and within a minute her breathing shot up, her torso shuddered, and she started crying.

I was closing fast on my own climax. My pole rammed her pussy relentlessly, and my hands pinched her nipples mercilessly. Mara's body trembled uncontrollably and her opened mouth alternated screaming with mumbling incoherent words. I erupted deep in her vagina like Mount Vesuvius in 79 ad. My lava streamed and didn't stop for a long time.

When I was done, I fell on my back, exhausted. I just lay there, attempting to remember everything that just happened. Twenty minutes later, Mara's face appeared above me. She smiled happily, "You see, it wasn't as difficult as you thought. I loved every minute. There was a short time I was floating among the clouds seeing stars. The constant pleasurable feeling never stopped. Honey, you were great. I owe you. Just relax and let Mommy clean you up."

I tried to prevent her, but she avoided my hands, dove on my stained, deflated penis and enveloped it with her lips. She licked and sucked my organ in a way I never felt before. After 5 minutes of milking the last drops of my cum, my pecker began hardening again.

I laughed, "Girl, look at what you did. You made me horny again. Is it fair?"

Mara grinned, "I never promised to be fair." Next, she moved up, straddled my legs, and gingerly crouched on my tumescent member. Soon after, she began riding me. She closed her eyes, extended her head back, and increased her pace.

Initially, I ogled her swaying mammaries, and then I roughly tweaked them. Mara moaned loudly, apparently very horny as well. I lifted my knees and pushed her upper body onto my thighs. Next my right forefinger nudged her clitty from side to side.

It took us about 5 minutes, and then almost simultaneously, we both orgasmed. I let her rest for a while, leaning on my raised thighs, before gently lowering her on the mattress. I kissed her lips tenderly and whispered, "Honey, you opened a Pandora's Box. Sex with you is heavenly, and now that I learned how amazing your body is, it will be tough to stop."

She didn't open her eyes, but I heard her whisper, "A great teacher, handsome hunk, and fantastic in bed. I loved everything you did. Why stop?..."​