Trust advice

Skskd

So I'm basically finally getting over my boyfriend of 11months tomorrow ,cheating around two months ago which he said was a mistake and he didn't know what he was doing etc.etc. blah blah (it was cheating in the form of talking through the phone with his best friend in the past that I knew they were only friends but I guess things got weird idk) we worked everything out and he took accountability and expressed how much he loved me and that he would never do it again (which I believe him only because this was the first time it happened)and yea it's still hard to keep the thoughts from coming in my head because you cannot be that stupid to make that kind of mistake to someone you supposedly love idk so everything behind that incident seemed like a lie to me,but I'm still happy with him he is my best friend genuinely .so today idk if this is my insecurity but this has happened several time before him searching up a load of local girls on instagram and it's always upsetting and confusing because I can't think of why I would ever do something like that?idk and I didn't confront him of it either bc he's gonna think I don't trust him and I'm insecure but I just want him to know I'm uncomfortable with it when it happens different times (it hasn't been happening a lot recently but still )and on top of that he's moving to a different area and going to a new school and wow I just hope he doesn't get friendly ,my anxiety is not okay with any of this lol :/