HUGS. Your AA friends are right, though, keep in mind that you don't know what's really happening. It's a pretty picture, sure, but we know here how different the public view and the reality can be. My ex and his gf have smiling pics posted all over facebook-- my daughter calls me from their upstairs bathroom to glumly tell me that they're fighting again. My ex's family, to the best of my knowledge, still deny that he has any drinking problem at all.
Despite him shoving in my face what a "healthy" relationship he's in these days, aexh is most definitely not a better person with his new girlfriend (now fiance), and she has the same problems with him that I used to. I used to feel like you do-- now I don't feel a great deal towards either of them, and what I do is a mixture of annoyance and pity. What you're going through is horrible, but it does not last forever. It takes time, but it gets better. Being angry is fine... just try not to let it hurt YOU!