I'm so sorry to hear this latest grief! I know how painful it is when our spouses hang on to us like the base they need, while reaching out more and more to replay actions "out there". I know this grieves you so.
I looked back over some texting and journaling of mine from last summer and a month after my H got his own place he was saying that the planned three months' separation wouldn't be long enough and how happy he was with his life. He looked so happy in all the party pics with other girls on FB but with me or at home he ALWAYS looked glum and sad.
Your H reminds me a lot of my H but I didn't have confirmation of PA with OW. He just told me he wasn't attracted to any one specific woman, but felt attraction to ALL women. Sigh. It makes it so hard for us, I know, and you are pregnant!
My H repeatedly told me how I would be happier with someone else, he would already be long gone if I had found someone, how someone else would finally allow me to do the things I'd always wanted to do in my life, etc., etc., etc.
I'm so sorry for the pain.
Let us know how things go for you. You are doing great, I think! Really great with handling your sitch
Hugs,
rH
Me54/H47 '08 H is "done" March '12 H moved out Brink of D, December '12 2014 totally reconciled! ...... "I firmly believe in the...absolute possibility of marriage renewal." Jim Conway