I'm insecure and it's affecting me and my relationship. I've become extremely possessive of my fiance and extremely hateful towards women. I don't know what to do.. I have no clue how it got this bad. When he mentions a female he works with, I'm instantly questioning who it is. I don't like other females being close to him or texting him. I asked him to not have contact with ANY exes or women he's had sex with. That bothered him and made him think I don't trust him. I just honestly think there's no reason to HAVE contact with any of them. Anyways, my questions are: How can I change to become not insecure? Is it possible? How do I boost my self-esteem?