How to get over insecurities from a previous relationship?
My boyfriend and I have been fighting a lot recently, and pretty much every fight we have has to do with his past or me not being able to trust him. I'll explain the situation, sorry if it's long but it's kind of complicated.
I have been with my boyfriend for nine months. We were bestfriends for years before we started dating. Before we got together I was in another relationship with my ex for just over two years. I met my ex when I was 16, and for the next two years of my life he put me through hell. When I first got with my ex I wasn't the jealous type. I never wanted to go through his phone, email, text messages or anything. I trusted him to go out to clubs or parties without me because I wasn't an insecure person. After nine months I found out that he cheated on me by receiving oral sex from another girl. I was devastated to find out about this because I trusted him and he took advantage of it. I was young and thought I was in love, so I decided to take him back and try to work things out. The next year of my life was literally hell. I wanted to know everything about him cheating such as the location, the day, how the girl looked, what was her name, her age every single detail. It drove me crazy thinking about it, it was like I was obsessed with it. After that I told him I would only stay with him if he didn't go to any clubs or parties without me, he deleted all the girls from his cellphone, he gave me the password to his email, he wasn't allowed to miss any of my phone calls and many other things. As you can tell, I started becoming very insecure. I started wanting to know everything about his past, something I never bothered to ask about before. I asked about his ex-girlfriend, I asked about the sex they had together, what else had he done with other girls etc. I became VERY insecure. I cried every single day because I was scared that he was cheating. I couldn't even handle him going to the store because I thought that he was going to cheat. After a year of putting myself tthrough this I finally had enough and I left him. About one-two months after we broke up I started dating my current boyfriend. I know now that it wasn't long enough, I needed more time to get over my insecurities. About 6 months after I left my ex I discovered that he was cheating on me with several other girls throughout our entire relationship. I suspected it all along but I found out for sure that he was in fact cheating. It hurt me to find out about it but at the sametime it didn't because I don't care for him anymore. However, it made me feel even more insecure.
My current boyfriend has never done anything to hurt me. He's never lied, he's never hidden anything from me, he's never done anything to make me not trust him but because of my insecurities, I can't. One of the problems is that when I was just friends with my boyfriend I used to talk to his ex-girlfriends. They used to tell me about the sex they had with him and at the time it never bothered me but now it kills me. I can't just accept it. I didn't even realize how insecure I was until my boyfriend and I sat down and really talked about why we fight so much. Every fight we have is because I bring up something from his past or because I can't trust him. We have been close for years and he's always been there for me. Hes never done anything bad to me and now I'm scared that my insecurities are going to ruin our relationship. How can I get over this? And how can he help me? I was cheated on and lied to for so long and now I've brought the problems from my previous relationship over to my current one. I really want to learn to get over this and how to trust my boyfriend but I have no idea where to start.