Earlier, my boyfriend of 3 years and I were having sex, and his penis made a weird popping noise. It kind of freaked me out, and afterward, I asked if everything was ok. He kinda laughed, and said "Yeah, that always happens when I'm having sex!...with you..." The "with you" part of that sentence was definitely an afterthought. Am I being crazy to wonder if he's been having sex with someone other than me? Or was that a normal statement? I am struggling with a lot of crazy thoughts lately and I really don't know what to think about this. I would appreciate any thoughts on the matter.