One moment Derek was pressed against him and the next Derek and his body was gone. Stiles stumbled and ended up leaning against the wall because his legs weren't all that stabled yet. The teen blinked as Derek disappeared behind the door that joined their two rooms. Stiles heard the lock.
Shame and embarrassment flooded Stiles' body which was quickly followed by anger. Derek had clearly used him. The only reason the werewolf had done anything was to prove a point and Stiles had fallen for it. Gritting his teeth Stiles hit his head against the wall once and his fist soon joined it. Stiles couldn't believe he let that happen. He was never going to let that happen again.