I asked you to stop, You didn't. You continued, Purposely hurting me each time. I wish you'd stop. I wish you'd stopped a long time ago. Why don't I just leave? I should've done. That would've been the smart thing to do. But I can't, Because no matter how badly I'm hurt, I still love you.
This isn't necessarily about a violent romantic relationship; it can be interpreted as an unhealthy friendship too, or a relationship within a family.