Scaramouche sees you talking and laughing with childe so he gets extremely jealous, but does it in a way where his feelings towards you aren't obvious. When you're walking to your next class (college classes), he drags you to an empty lecture hall in an attempt to bully you and get your attention once again. This always happens, whenever you do something he does not like, he always approaches you and drags you somewhere isolated to bully you.