CTH, that really sucks and I'm sorry. The thoughts of OM/OW are the worst. See when I'm having those sorts of thoughts I try to remind myself that at some point, hopefully soon, we'll feel the same way we do about our ex gf/s- i.e them being with OM now is not bothersome anymore. I guess it'll take time to get there but we will get there.
Two, it's her decision to choose to be with some loser for her own selfish reasons than be with the father of her kids. That speaks volumes about her character and self-indulgence nature. You're better off without her...even if it's hard to see that right now.
Me: 35|WAW: 38|D: 6yo | http://tinyurl.com/2dxx7m6 Feb 2006, left, came back in two weeks Aug 2006, left again Apr 2007, filed for divorce Dec 2007, reunited Mar 2010, moved out, filed again