My girlfriend and I have been together for eight months. We are both incredibly happy and, at the beginning rarely fought. However, now my insecurities have been causing a lot of problems and we have been fighting. The main problem is that I don't trust her, but I have no reason not to. For example, she will go to a public sporting event and I will worry to the point that I can't do anything else about some other guy trying to do something with her or actually doing it. I worry about guys talking to her. I worry about guys texting her. I worry about guys that she has been friends with since long before she met me. I don't know why I worry about these things and why I worry so much but I need to stop or I fear it will destroy our relationship, which I honestly couldn't handle. How do I stop worrying and get rid of my insecurities?