Song about relationship?

okay so first ill just say that my bf committed an ultimate betrayal. he lied to me and basically had with my ex best friend while we were on a break. since then ive forgiven him but i think hes realized that since ive forgiven him so easily, i really love him. so now hes putting everything over me and treating me like **** because he think that whatever he doesnt ill just forgive him. but im not like that. i want a song that kinda says "i love you but if you dont start treating me right im going to leave you a**" anyone have any suggestions?