Rescue Me (& Take Me In Your Arms)
Just when Stiles is starting to reach panic-attack levels of stress, a leather jacket and firm thigh are pressed right up next to him, and an arm is casually thrown over his shoulder. Stiles looks up to thank this kind person who is saving his life, and suddenly forgets what air is.
Because HOT. DAMN. Call the police and the fire-man, this guy is smoking.
Or the AU where Derek helps save Stiles from an ex, and a steamy BDSM relationship ensues- with feelings all over the place.