How do I save my marriage to husband in MLC?

[RLay1100]

Well, it has been three months since my H and I separated. I AM doing a lot better emotionally in dealing with our marriage separation than I was in the beginning. I do still think of H and what he has done (and IS doing) too much, but I'm crying and feeling broken less.
Contact with my H is VERY minimal- we communicate through text messages more than anything. He doesn't seem that bothered that I'm not talking to him, though. :-( I wish he did, but I guess he is just so wrapped up in the young girl he's having an affair with he doesn't notice anything else.
I have had the kids living with me for a month now and he has only taken them for ONE weekend, which is so disappointing. H was always a good father...::sigh:: My boys tried to talk to H about how they feel sad that he doesn't pay attention or even seem to care about them when they are with him, but they said he just argued with them that that wasn't true. My 10 yo actually told him he didn't like it when nephew and his fiance (the 19 yo H is having an affair with) hangs out with them all the time because he doesn't like HER. (I had NO IDEA my son felt that way about her until he told me what he had discussed with his dad!) Of course, that didn't stop H from continuing to inviting them to do things with him and the boys the ONE weekend he spent with our kids. ugh
I am still "the enemy" to him. He still lies to me, doesn't trust me. Although he is actually nice to me SOMETIMES, he still prefers to be difficult and start arguments and yell.
Everything is at a standstill. H seems content living his life without me and our marriage and the kids. I am sad about that, but I have resigned myself to the fact that all I can do is stand and wait. The sadness has begun to hamper my efforts to heal and improve myself, though, so I am going to use some time off from work this week to get my butt in gear and back on track.