My boyfriend and I both went off to college back in August. Prior to this I’ve always had pretty decent self confidence. We went to school with each other since we were babies and have had a crush on each other starting in 8th grade. We started dating in our senior year and I couldn’t have been happier. When at college things started getting weird concerning other girls. I always trusted him and never thought any issues would come about like this. We would FaceTime while both away but if a girl would open his dorm door the screen would immediately be paused. If he walked down the hall while on the phone with me and a girls voice could be heard he would mute his mic. Whenever he has friends in his room that are guys he’ll say their name, but if there’s girls he’ll refer to them as people. Whenever I question who “people” are he immediately gets defensive. Whenever I visit him at school he doesn’t introduce me to any of his female friends (one introduced herself). We ended up having a rough patch and he broke up with me for not even a day, but in this time he added girls on Snapchat, one of which sent him a picture with her boobs out. When we were both home for thanksgiving break we didn’t have sex at all, which carried on for a month, but I’d find cum rags in his dorm and room at home (not from me). I didn’t ever think he’d cheat on me, but when confronted about all of this he tells me he’s not cheating and that I’m just delusional. I’ve become super insecure that I’m not good enough for him because of this.. What should I believe?