Bit of back story, exh had affair many yrs ago and we separated, during our separated time we would still occasionally sleep together.divorced 5 yrs ago, kids grown up. Nearly 2 yrs ago it all came out about this other woman, kids didn't know about the affair as was all hidden, they found out in 2013, late last yr his gf had a baby, my dc have nothing to do with baby or gf,have told their dad this is how they feel and he is ok with this! The mess is that we have been sleeping together since be4 the gf was pregnant. I know it's wrong but I can't stop, we talk daily,I go to family gatherings, his gf doesn't.