Boyfriend and Bestfriend don’t like each other... What do I do?

My boyfriend of one year and five months and my bestfriend of three years, do not like each other at all. I don’t even know what to do anymore about them. It can never be just the three of us because it’s always just awkward. I hardly hang out with my bestfriend anymore because I’m always with my boyfriend. They both never tell me why they don’t like each other. My bestfriend tried to be nice but my boyfriend never tries. I’m tired of it all already.