Am i overly being sensitive about this

I just keep on telling my partner that im either worried that hes getting too close to some or yet friendly with someone else since hes the type of as "friendly bf" and as such because of back then he didnt know that he was being too friendly and just made me kept on thinkin and thinking about it though I already told him my worries about it. As of now we didnt see ourselves in 2 months(due to me being able not too) and his school just started and I kept on telling my worries to him and of course he reassured me that he wont but I of course am still worried about it but im still bothered by the fact that my bf and my friends are somewhat close though ofc they knew eachother longer than me and one lives near and in the same location and yet ofc they dont like eachother romantically but i am still bothered since they hangout w eachother and also went to one of my friends house (tho I couldnt come) and watched a movie together like 3 of them but one of my friends(she has a bf) seem close but OFC they dont like eachother that way but the way they could hangout alone and walk alone together(sometimes because they live in the same area) js somewhat always bother me. Though that is because my bf used to like 2 of them but yes he doesnt see them as that way now but it STILL BOTHERS ME ON HOW HE CAN EASILY GO WITH THEM. Im easily jealous due to the past and I cant seem to change if I wanted too.

I know that I should normalize my bf having the opposite gender as friends but i cant stop myself from worrying about it thinking on how close they are even though its completely NORMAL ARGGGHHH and everytime I do get jealous or yet worry, I WOULD START TWEAKIN OR YET CAUSE MYSELF WORRYIN ABT IT ALL NIGHT AND CRY ABT IT EVEN THOUGH HE WONT DO THAT