What should I do i am friends with two girls their my best friends i have boyfriend also the don't like him?

he is little crazy he like ask off the wall question he has a very good open minded and is just crony sweet goof ball. but my two best friends can't stand him they get mad when he talks or says anything to them or to me things is about year ago i had 3 best friends no just two she help me keep the peace but now were no longer friends.... i'm the one that has to keep the peace. what should i do??i am also the only in the group with a boyfriend help me they don't want boyfriends right now etheir