Fair enough, well if any of your friends give you shit, just say "Guy A is a douche, I would have preferred to talk to him about it face to face, but he won't talk to me, and I'm not about to put my life and feelings on hold until he smartens up, so I'm just doing what makes me happy."
In my frat, one guy started dating a guys ex, awhile after they broke up, but the first guy had dated her for two years. Long story short, first guy was hurt, second guy was defensive, caused drama and she ended up cheating on the second guy one drunken night with the first guy. . . so yeah didn't work out so well