I know my boyfriend won't cheat on me and he tells me he won't. We've told each other we'd let the other know if we ever physically or emotionally cheat and had a discussion on what counted on cheating. So I know he won't cheat on me, I'm not worried about that but then why am I still so insecure? Why do I still worry if I don't think he's going to cheat? Any advice? Does anyone else feel like this?