Something tells me both Lydia and Stiles make friends pretty much the same way. By not caring if the other person really wants to or not.
Younger Stiles: DUDE! IS THAT THE CLASSIC ISSUE OF BATMAN WHERE DICK BECOMES BATMAN??
Younger Scott: Uh…I guess? My dad gave it to me and I haven’t–
Younger Stiles: OMG THAT’S OUT OF PRINT I NEED TO BORROW IT PLEASE YOU CAN BE MY BEST FRIEND FOR EVER.
Younger Scott: Uhm, actually, I’m not–
Younger Stiles: GREAT DINNER AT MY PLACE, 5 O'CLOCK. IT’S THE SHERIFF’S HOUSE CUZ MY DAD IS SHERIFF SO DON’T BE LATE OR HE’LL ARREST YOU.
And thus, under threat of arrest, Scott and Stiles became bffs.