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Severus hadn't expected to get this far, it was supposed to be a one-time thing and he'd forget about it, Draco wouldn't say a word and neither would he. But it was addictive. Having his hands wrapped around Draco's small waist as he penetrated him hard on his desk was not an opportunity he was going to waste.
The first time he had Draco he was fourteen, everyone was watching the Triwizard Tournament, so Severus had his star student without anyone asking any questions. As Head of House, he had little trouble pretending to Draco's housemates that his parents had asked to speak to him to reprimand him for not putting his name in the Goblet if he could think of a way around Dumbledore's age limit.
That night, Draco spread his legs and stuck his large cock into the small hole his student offered him. He told himself he would never touch him again, the memory of his full lips sucking his cock and Draco's face as he came for the first time would be trapped in his mind.
He thought it would be the first and last time, but Draco didn't stop looking for him, they did it many times over the rest of the year. Draco was always looking for his teacher who had made him feel like no one else in his life. The one who stuck his dick in him and made him moan like a whore.
The school year was over, Draco was stressed because his parents kept the Dark Lord at home and he just wanted to go to Hogwarts to get away from the Death Eaters who wanted to get their hands on him.
Severus stood his ground at all times, showing no interest in the boy. But he still wanted to kill anyone he thought the Dark Lord might give Draco as a reward. Narcissa would never allow anyone to harm her son and would kill her husband's master if he gave anyone her son as a reward.
Despite knowing this, Severus kept an eye on Draco's room, his proximity to the Malfoys being an important factor in keeping an eye on Draco.
There wasn't much of a problem before Draco retired to Hogwarts, Lucius had a new mission and Narcissa had entrusted him with her son's safety. The first thing on his mind was to fuck him hard and fill his arse with his cum.
Watching him from a distance at dinner, he got hard, imagining Draco moaning and begging to let him cum, knowing he was the only one who could control him.
When it was all over, he didn't even have to go to Draco himself, Draco came to him.
"Severus, I'm so desperate," the boy whispered against his lips, already swollen from the kiss they'd shared when they'd met again, as he sat at his desk with his legs spread around his hips.
"Is that so? I thought of all the morphs desperate to get your cock in, you had chosen one?" she began to undress him with her hands, knowing that the boy had been touched by no one but him.
"No, no one would compare to you Severus. No one fucks me like you do," his cock was now very hard, desperate to get out and into the boy's hole.
"No one," he pulled the boy's trousers down and thrust his cock in without warning, "no one will fuck you like I will," Draco's breathing practically stopped, he had cast a wand free lubricating and stretching spell before entering.
The thrusts continued hard and fast, he could feel Draco trembling beneath him. It had only taken two months for her to have him like this again.
He wasn't going to lie, he loved watching Draco squirm from his thrusts, he felt himself clenching around his cock not wanting to let go, no one would fuck Draco as well as he did. He had stretched him to his liking, moulded him to only moan his name and scream with every orgasm he gave him.
"More Severus, faster," of course Snape was quick to comply, who else would do it but him. He had watched Draco grow up and knew his every virtue and weakness. There was no one better than him for someone like Draco.
"You're so sweet Draco, you look so beautiful moaning my name underneath me," his cock pumped in and out of the boy who could barely form a sentence.
"Only for you Severus, I want to be sweet only for you," so beautiful, so pure.
"That's right, you're mine Draco."
He bent down to take Draco's mouth with his own, possessing him, swallowing every moan, every sigh, every whisper of his name. Draco was as tight as the first time he'd thrust his cock into her.
"You're driving me crazy, you're so delicious, so addictive," he gripped his hips even tighter, pulling him closer and closer, going deeper and deeper with each thrust.
Draco couldn't help but smile, nothing meant more to him than the love of his teacher, the feeling of his big cock throbbing inside him just told him that he was doing something right, that someone loved and appreciated him.
No one knew how much effort Draco had put into keeping Severus from finding him attractive. But knowing that Severus considered it an addiction made every damn effort worth it.
"You're so big Severus, I'm going to feel you inside me for days," Severus' cock went so deep that his legs didn't stop shaking and he didn't want it to stop. He wanted to keep it inside him longer, it didn't matter if he came or not, he wanted Severus to fill him forever.
"You take my cock very well, like a champion, no one is as perfect as you Draco," he knew that these words would bring the boy closer to his orgasm, in his mind there was only the desire to fill him to the brim, to let him dribble his cum and make him tremble from the overstimulation.
"Give me your cum Severus, fill me, fill me with your sons," Draco was almost delirious as he felt himself opening wider and wider to Severus' cock, his legs spread wide to take all his teacher was willing to give him.
"You are mine Draco, my whore, my slut, I will fill you and you will carry my children, you will never be without being filled with my seed" he could almost feel his own orgasm approaching, the thought of Draco full of his cum dripping and begging for more was a beautiful image, he took his hair and brought it close to his face, he was sweaty, his hair stuck to his forehead and his mouth was open letting out sweet moans "You will be so full of me and you will always beg me for more".
"Yes, yes, please Professor, fill me up," Draco crashed his lips together again and a few more thrusts were enough to make him cry out over his professor's mouth, his cum spilling between them.
Severus didn't take long to come either, watching as Draco writhed in his hands, still recovering from his orgasm. He filled his entire insides with his cum, leaving him even more stimulated, still not parting his lips, wanting to possess all of his student.
"You're so good Draco, you took your teacher's cock so well."
Draco moaned, shuddering even more beneath him, so tired that he fell asleep on Severus' chest.