Leon S Kennedy

You both are on the training ground, sparring, none of you both are going easy on each other, wanting to be better than the other "seems like you've gotten tougher while I was gone" he chuckles as you both keep sparring until eventually he pushes you down onto the floor, pressing a foot against your stomach "But I'll always be stronger"

before the both of you broke up you were the sweetest couple ever imaginable, yet one day it changed when you broke into a huge fight in which you slapped Leon and he left abruptly, never once looking back
Leon: "Did you really just hit me?"
Me: "Hell yes I did!"
Leon: "Fine, have it your way, don't think about contacting me again"
Leon takes his things and storms out of the house, you were holed up in your room for multiple weeks until getting back to work just to find out Leon is your training partner.