Stop hanging around them and find someone else thats single to hang with. Why would anyone put themselves in a situation like that in the first place?

Umm, in my own opinion you should have more faith in God he will find the one for you in someways =D..

Be patient. You need to take your time, just breathe for a sec and work out who you want to be with. I think that you need to figure out who you really love. Your exs' bestfriend or your ex bestfriends boyfriend, if i were you, i wouldnt date any of them, you need to stay loyal to both of them, even if you dont like them. Find someone else. Its harsh, but its truth. :)