I'm really sorry to hear what you're going through, it's tougher than tough.
Have you gone to Al-Alon? If not, I highly suggest it for you and Alateen for your kids.
Me: 42/H: 37 T: 10 years/M: 8 D9, S8 Bomb: 7.23.07 Separated: 1.20.08 D Final 3.19.09 Affair started in '05, found out parts in 11/07. They married 11.26.09