LMG, my H is like your H, though he did have an EA last year. I think it's partly MLC, but by no means a full-blown MLC. And no, it doesn't matter.
However, I've found myself thinking that he really does have a lot of grounds for disappointment/unhappiness in our relationship. Of course, I think he's blown it way out of proportion and dealt with it poorly, but that's a whole separate issue. He's said things that no one should say to another person, but then again, so have I.
So I'm working on me regardless of what his reasons for f-ing up our family may be. I'll be a better person, perhaps better enough for him to snap out of it and realize that I, the kids and our family are worth fighting for. If not, then I'm a better person and I know that I did everything I could to make things work.
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