Uh ugh

My boyfriends bestfriend likes me... And I don't know what to do.. I want to tell him but I don't want to hurt his friend because he's my bestfriend too, and what's even worse is that I like him a little back too. 
I don't want to break up with my boyfriend but there's something between me and his friend. 
I love my boyfriend and I need someone I can talk to about this who won't judge me. 
(I could never cheat on him if that's what your getting out of this)