Hi F-I-O..GAL and being the best you can be is so important in this process. You mentioned that most of your time is spent at work and with the kids while your H is living w/OW. Is this what he sees all the time as well? Have you done any 180's that would grasp his attention. I see alot of posts where people are making new friends and getting out to interact more with other adults. It feels strange at first but gets better. Give him something to take notice. Maybe this is something you should do. Hire a sitter or let H keep the kids while you GAL and show him what he's missing out on.