I read over her bio a little bit and if you feel like she'd work then I'm all game for it. He grew up in town but wasn't apart of the club until he got home from the Marines and went through PTSD counselling for some issues he brought back. He's normally a happy go lucky guy but if and when things trigger him he goes all self destructive and blows up. He'd never blow up on her though, that's one thing that he can't stand is hurting women and its actually part of what had happened while he was in the Marines. He 'fell' into a situation that he wasn't supposed to see and it eats away at him on the inside every day.
We can say maybe they were had a thing in high school before he went to boot camp? Came back and started things back up. Had his first major flip out and they ended things. He went through counselling and then he met a fellow marine who was in the club who brought him aboard after he failed the psych test for police academy and things kind of just picked up from there with them two? They'd be good for a while, maybe a month to almost a year and then shit would hit the fan out of no where?