My boyfriend (at the time) and I have been together for 4 years. We first started dating when I was 15. He was my first with everything; first kiss, first boyfriend, first everything. I lost my virginity to him. But within those 4 years, he cheated on me numerous times but I took him back like nothing. My last year of high school, he cheated on me but I took him back. When I turned 18, I moved in with him. I left everything and everyone for him. I fought for him. We lived together for 5 months. Everything was so perfect until that one day, he decided to kick me out for no apparent reason. And then I found out the week after, he had a new girl. I tried to move on which I did but he kept coming back because I guess he didn't work out with his new girl. Months later, I met this new guy and he found out about him. My ex tried to come back into my life because he found out about my new boyfriend. He treated me so differently. As if to win me back. But everything he's done to me in the past is too intense to even just brush off. Please help me. I don't know what to do.