Stiles had just found out that Scott made out with Lydia after he specifically begged him to see if his werewolf senses picked up any romantic interest from Lydia to him, which lead him to where he was now.

He had immediately hopped in his jeep, speeding to your house and stumbling through your window mid-panic attack.

You now sat on your bed as he paced around your room with his head in his hands, listening patiently to his rants.

"I specifically asked him to see if Lydia liked me.. Me! And then he goes and makes out with her?! I'VE BEEN IN LOVE WITH HER SINCE THE THIRD GRADE, MAN!"

His voice began to break, fading into a whine as he releases all his heartbreak through words. Like he always did, with the same person he always did.

That very same person that has always loved him though watched his eyes on another girl. You.

"And-- and I didn't even find out from him either, I found out at practice because her stupid lipstick was smudged."