Boo. If this had been a woman bitching about numbers you'd be giving props all around.
My tally has hit 13. I am 24. I also started at 15. When I was 20/21 I had ended a serious relationship, had a few FWBs, and just hung out with friends. BFD, it happens.
And I am in no way a hypocrite. Can you imagine the problems that would create? Al's girlfriend probably wouldn't believe him, and if she did, it'd create a whole slew of drama. I reiterate, for all you know, they could have talked about it, or they have an open relationship. If, however, he continues hooking up with your would-be girlfriends, I'd end the friendship. Whats making you stay, anyway?