He left me.... please help before I lose it

Amber
After 2 years my boyfriend leaves me. Since day1 I've been second place, I've been cheated on and I still overlooked his flaws. I'm 29 and this was my first real relationship and I asked him to help me learn but that didn't mean anything to him. I was beaten in a past relationship and I'm very physical when mad. We had a fight and he wanted to be alone and by himself...... I'm depressed and I'm still in love. I have no desire to be with anybody else or move on. How do I get him out my system?