Summary: You had planned to move on with your life after what had happened with Professor Wolff. A sudden request from another Professor, though, holds you back from doing so, pushing you into an endless cycle of forbidden escapades.

"And that's why I want you as my TA. Nobody is as suitable for this position as you are, Ms. Y/L/N."

When you had first heard those words, you were in utter shock. The dark-haired man leaning against his desk was looking at you with a smile on his face, muscles bulging as he kept his arms folded over his chest.

Professor Carlos Sainz - one of the best in the business - had asked you to become his teaching assistant. His one and only teaching assistant.

To say you were shocked was an understatement.

To the public eye, Professor Sainz had become famous for his packed classes and all the successful alumni that came from his courses. His successful career was everything the internet talked about, and his many books out there still sold copies even after years of being published. It only took you one day to discover why he actually was famous, at least between the students.

When you had first entered the room, you were met with chatter and shrill laughter. One swift look around the room was enough to make you notice the demographics: probably eighty percent women, twenty percent men. Unusual.

The space had been absolutely packed, leaving you to scramble for the last seat in the back. The chatter inside the room had stopped the moment footsteps reverberated against the walls, the sound of a leather bag hitting wood making your eyes lift from your laptop.

With just one look at the professor, you knew why his name was the most talked about on campus: he had the looks, the charisma. He was the kind of man people talked about in books, the kind of man that held the kind of authority that intimidated you to no end.

"It would be a pleasure to work for you, Professor Sainz," you stated, your voice shaky. "But there's people in your classes that probably deserve it more than I do."

"Such a sweet girl," the words that Professor Wolff had whispered to you on that day, a few weeks prior, had a different meaning coming from the Spanish man's mouth. They felt warm, sweet. "But, again, you're the one that I think would fit best with me."

The firmness in his tone was enough to push you into saying 'yes', becoming his TA from the moment he shook your hand. Back then, you thought the action fit him. Authentic, classy.

You never thought you'd find yourself in his home, though, with one of his hands inching close to your navel as his luscious lips pressed against yours in heated kisses.
What had started as a normal grading session turned into too many glasses of wine, and what had started as a heart-to-heart conversation ended with the two of you making out on the couch like teenagers.

If you had to be honest, you didn't even know how you had gotten there. As you let your shoulders relax, though, and rolled your hips against his hard cock, you turned your mind off and focused on the moment.

"Fuck, sweetheart," Carlos groaned, his palms gripping your hips as his head rolled against the back of the couch. "I'm not gonna last long if you keep doing this."

You smirked, your hand coming down to unbutton his crisp, white shirt. Button after button, the opened gaps of the material revealed his tanned skin, his cologne invading your senses.

"Professor, do you let all your students treat you like this?" You asked, voice cocky as you let your hands roam against his chest.

"Just my best students," he played along, smirking your way before switching positions, your back hitting the comfortable material of his couch. "Do you let all your professors touch you like this, Ms. Y/L/N?"

The question pulled all your breath out of your lungs, flashbacks of that one afternoon in Professor Wolff's classroom rushing past your eyes. Your heart started beating out of your chest, fear that the man on top of you knew about your forbidden escapade making your legs shake.

Professor Sainz just laughed, highlighting the fact that he was joking by shaking his head. His thumb inched towards your mouth as he stared down at you, eyes serious. The pad of his finger dragged the reddened skin of your bottom lip, his smile turning malicious as his other hand made a quick work of your jeans, popping them open. "You would never. Would you, sweetheart?" He said, voice firm. "Just like you would never tell a soul about this."

Batting your eyelashes nervously, you shook your head.

For the second time in two weeks, you were indulging in something forbidden, something people only read about in books. One side of you wanted to put the situation to an end, to keep your reputation from being destroyed; the other, though, wanted everything and nothing to happen. That part of you wanted to enjoy a night of mindless, forbidden sex with the man you saw every day.

And how could you say no?

Professor Sainz dipped his head to your neck, kissing all the way down until he reached the collar of your blouse, quickly unbuttoning it open to reveal your bra. His already dark orbs focused on the peaks pushing against the fabric, your nipples so tight you couldn't bear it.

With one swift motion, the garment was off, your breasts swaying freely before Carlos caught one nipple in his mouth, swirling his tongue against it. The sudden pleasure had you moaning out a curse, your legs wrapping around his middle as he worked your sensitive skin in his mouth.

Tangling your hands in his hair, you breathed out a sigh of pleasure. "Professor, please-"

"Please what, Y/N?"

"Touch me, please." You whispered, gripping his warm hand and pushing it towards your dampened panties, the cocky attitude that you were sporting prior long gone.

"So desperate," he chuckled, letting his fingers graze the sensitive skin of your covered center. Pleasure running through your veins, you couldn't form a thought. You were just left to close your eyes, whimpering softly as his name stayed on the tip of your tongue.

Carlos was silent, enjoying the way you were withering under his touch as he played with your strings, bringing you closer to your orgasm with every passing second.

Your professor's teeth grazed the skin of your neck, his warm breath making shivers run up your spine. His mouth inched closer to your ear, his fingers quickening as you heard him chuckle again. "Didn't think it would be so easy to get you in my bed," he whispered, voice dark. "You don't play hard-to-get. Do you, Y/N?"

You whimpered when his digits left your core, a sob close to leaving your mouth from how close you were to finally letting go. The material of your underwear sliding against your heated thighs snapped you out of your trance, your eyes focusing on Professor Sainz as he undressed you.

His orbs kept their focus on your core, a light laugh leaving his lips when he saw your juices glisten under the dim lights of his living room. "Look at you, so ready for my cock," he hummed, leaving a quick kiss right between your breasts, an unusual warm feeling spreading through you.

Hit by the sudden urge to feel him, you rushed him to get his slacks off, getting lost in the fury of his kisses as the hard ridge of his erection slid against your pussy. It wasn't long before his tip was prodded against your entrance.

"Mierda-" he cursed, eyes closed shut. "This is so damn wrong."

"No-" you shook your head, eyes almost tearing up as you looked at him desperately. "No, no, no, please-"

"Y/N-"

"Professor, please," you begged one more time, your hand cupping his cheek, later dropping to his neck. "Fuck me. I won't tell a soul."

He looked at you for a swift second - eyes void of emotions -, his hand rising to push a strand of hair away from your sweaty face. He took you in, leaning down to kiss you fiercely before pushing inside you.

There was no coming back.

The stretch left you to moan out involuntarily, your lips parting from his as you threw your head back. His body started to rock against yours just a few seconds later, the room filling with your moans and his curses as he fucked the conscience out of you ruthlessly.

"Such a little slut," he groaned against your neck, leaving a bite there before moving back to let his lips linger against yours. "Letting your professor fuck you like this."

You could only moan, the sounds of your pleasure getting lost inside the walls of his house as he kept his pace. Getting closer and closer to your peak, you wrapped your legs around his hips, your fingers scratching against his back.

Professor Sainz leaned down to bite once more into your sweet spot, soothing the skin with his tongue as he hummed against you. His thrusts were getting sloppier, more desperate, as he pulled you closer to him.

"You gonna cum for me, sweetheart?" He whispered against your ear, his hot breath fanning against your sweet spot.

"I'm so close-" you whimpered, letting one of your hands travel down your stomach, being able to just reach your navel before it was swatted away. A firmer - and much bigger - finger pressed on your clit, drawing quick circles and making you moan out one last curse before your body finally let go.

The light squeal that left your mouth was enough to leave you a little embarrassed, your eyes closing as your body relished in the aftershocks of the orgasm.

"Shit- shit-" Professor Sainz groaned, eyes closing as a small grunt left his mouth. He released inside you, painting your constricting walls with his hot cum as he let his forehead rest against yours, joining you at regaining your breathing.

He was off of you before you knew it, helping you slide on your panties in complete silence. Running a hand through his dark locks, he put his clothes back on before inching back towards his living room table, grabbing the paper he was grading before the night took a turn.

You were left to glance longingly at him as you buttoned your shirt back up, fixing your hair blindly. Just as you were sliding your pants on, his voice broke the silence.

"You think you can help me with grading tomorrow night, too?"

-

Carlos knew he had fucked up.

He had known it from the moment he had let himself fuck you against his living room couch. He knew he had acted like a horny teenager, and it was so unprofessional of him to treat a student like that.

Every bone in his body, though, wasn't thinking the same.

Just the thought of your lips pressed against his had him hard, earlier that morning, when he was getting ready for the day. Your naked body kept running through his mind the entire day, and he couldn't believe his own mind when he looked forwards to seeing you in his classes.

He felt ridiculously smitten, and it wasn't something supposed to happen.

"I'll see you next week." He told his class, smiling gingerly, before giving the students his back to pack up his bag. His day had come to an end, and all he wanted to do was to go home and relax on the couch.

You had canceled your grading session earlier that morning, mumbling about needing to discuss something with a professor, and he wanted to punch himself for feeling a slight bit disappointed.

You were his student. You were his assistant. There was no way it could go any further.

Following the last few students out the room, he closed the door behind himself, locking it shut. His eyes focused on the hallway his course was located in, locking with Professor Wolff's just a couple feet away.

Just like him, the older man was standing outside his office, probably waiting for someone that had signed in for his office hours. His eyes were hidden behind his thick pair of glasses, the first buttons of his shirt undone as his free hand held a leather bag.

Professor Wolff smirked, raising his hand quickly in greeting. Carlos reciprocated the gesture, but his eyes soon left the man when a familiar figure walked in his line of sight.

The familiar pair of legs looked smooth under the soft material of a short skirt, that ass he could recognize everywhere catching his attention just a second after. You were a walking turn-on for the professor, and he couldn't repress the smirk that formed on his lips.

The sudden excitement that had electrocuted his body was quick to disappear when he saw you striding closer to Professor Wolff, a flirty smile on your lips as you looked up at the Austrian. Torger was cockily smirking your way, his hand stopping on your lower back as the two of you talked.

Your hand slipped on his forearm, tenderly squeezing his muscles as Carlos watched from the distance, his body heating up every passing second.

He couldn't hear your conversation, but he knew that Professor Wolff didn't look at all his students like that. Like they were his preys.

Squeezing his fist around the handle of his bag, Carlos breathed out a harsh breath before leaving the building, heading towards the parking lot.

He hated to come to conclusions quickly, but there was no way to put it: what had happened with you was just a mistake.