So it looks like Senpai leaned into the rock girl lifestyle and got herself a sex friend with Mr. Nice Guy? They arrived together, leave their stuff in each other's places, sit close together...Doesn't feel like they are exes.
And I get the "bad girls are hot" angle, but smoking makes you and your clothes, even your walls smell like an old ashtray, turns your fingernails and teeth yellow...I can never see the appeal in that.