You were walking with you older brother as your boy best freind jack saw both of you and he ran to you and kissed you, as he drags you to a dark alley keeping your brother shook

"You're mine! Don't hangout with other boys again, except me! Okay?! And who was he?!"

As he says, he's face close to you as he pinned you to the wall, panting heavily as if he was so jealous.