Boyfriend and friends

So me and my boyfriend have been together for over a year and we’re crazy in love...

Anyways last night a bunch of us were together. My best friend and one of his best friends use to be together and had a bad break up but she hasn’t 100% moved on..

So last night they were alone and they were talking and he said that he wanted to hu with me and stuff to her and she got really mad at him and came and told me. Now I feel so uncomfortable around him and we use to be so close and my boyfriend knows and now I feel bad and don’t want to ruin their friendship should I just keep myself away from him even if that means I won’t see my boyfriend and are friends as often?