Derek was fucking into Erica hard and fast, the pleasure of fucking coming second to the anticipation of what was about to happen. A cracked little whisper of his name from the doorway which caused Derek to smile down at the girl who was also wearing quite the evil grin herself. Turning his head smile still in place he looked at the heartbroken expression on Matt's face huffing out a "Yes Matt?" between thrusts, revealing in the tears rolling down the boy's face. The same boy who not two days ago said he loved Derek. Stupid boy. Erica was moaning at each thrust louder and louder putting on a show for their audience, it wasn't the first time Derek had used her to do this to somebody.
The first time he had been prepared for outrage from the girl at using her like that. Instead he found that she enjoyed it, and didn't really care about how she was helping Derek to hurt other people. She still got a good fuck out of it so it hardly mattered to her, it wasn't as if she knew any of these people and they were all pathetic anyway. Nobody could change Derek, so why bother trying. She looked back over her shoulder again smile still in place, only this time it was to look at the boy whose heart she was helping to break. All she saw was a sad little boy who needed to learn that life wasn't all peaches and cream. She felt nothing about what pain she was causing, nothing but the pleasure that every thrust of Derek's gave to her.
She watched as the boy; Matt ran from the doorway crying, leaving it open for anyone that passes to see in. Despite the lack of audience it seemed that Derek had gotten whatever it was he was looking for and fucked into her harder, faster, in abandon rushing towards his own orgasm now that he had been caught, bringing her along for the ride. Groaning out a "Yes" Derek finished with a grind into Erica before pulling out and walking away from the girl still in his bed uncaring of whether or not she had finished, but rather signaling that he wanted her to leave now as if she was some sort of servant there to simply do his bidding. In a way it grated on her nerves, but then again what else should she expect out of a man who enjoys breaking up with his boyfriend or girlfriend by having them catch him fucking another person.
Gathering up her clothes she got dressed along with Derek in silence tossing an easy, "Until next time, Alpha." over her shoulder as she exited out the already open door. Derek watched her leave with little interest, instead just pulling on some pants he moved to his desk to continue his search for this Stiles, which wasn't hard when you could hack into the schools records system. A boy from a little town called Beacon Hills, only son to the Sheriff, reasonably good a lacrosse, but not very popular. It would seem Stiles only really had the one close friend, another boy called Scott. This boy, Stiles was beyond smart. Too curious for his own good, was always being found at crime scenes, discovering evidence. It surprised a lot of people he didn't go into the criminal justice system, not his father though. His father knew what his son was most interested in and pushed the boy to go for that rather than what he had thought was expected of him, and so here he was at Berkeley studying genetics.
His friend Scott was still in Beacon Hills, studying to be a veterinarian, which meant that the boy was here all alone with no friends. That would make everything just that much easier, and it reminded him a lot of himself when he had started school at Berkeley. He had left everything and everyone behind and was picked up by a seemingly sweet and interested Kate Argent, who had really been the same as Derek was now only crueler. Even Derek couldn't bring himself too be as bad as Kate had been to him.
She had toyed with him, flirted with other people in front of him, kissed other people where he could see and blamed the other person saying she didn't want it that it had been the other person and that was it. She had toyed with him for over a year before finally ending it the day he told her that he had loved her. He found her in his bed with his Uncle Peter.
It's not quite as gross as it sounds seeing as his uncle is only a few years older than him, but still it was a serious shock to the system that officially broke his heart. It was in that moment, just as he was standing in the doorway watching the woman he thought he loved fuck his uncle just as Matt had been watching him moments ago that he would never be the one to have their heartbroken again. He would be the new Kate, he would be the breaker. Not the breakee.
Ever since then he had been a completely different person than he was before he met Kate. He was the bad boy now, he was the Alpha and the Alpha always gets what he wants. And right now what the Alpha wanted was one Stiles Stilinski. There was nothing to stop him either, he would have this boy and the conquest would be oh so sweet. Though Derek didn't expect the boy to last long before claiming to be in love with Derek, and claim to love Derek he would. It wouldn't even take that much effort really, just a little attention that he was so obviously unused to getting and Stiles would be eating out of the palm of Derek's hand.