[ooc: gotta at least use three too because dayuuuum.]

'Walking in' might have been a bit of a stretch. Normally walking in on someone would involve being in the house...using a door...something to that extent. Derek's preferred mode of transportation involved jumping up to Stiles' window and getting in that way, and this time he probably should've used the doorbell.

The scent of arousal hit him before he even saw Stiles, and honestly, it was so dark outside he wasn't sure if the otherwise-occupied teen had even seen him come in. He was so caught off guard by his own trespassing that he didn't make a sound, didn't know what to say or do to make this any less a total invasion of privacy.

Maybe he could sneak back out? Not probable, but worth a try. Now if only he could get his body to cooperate with his brain, he would be in business.