It will probably make him happy I'm going out so that he will feel justified in continuing his R with boss daughter. That's what happened last time. He saw me out via FB friends tagging me. Then he started posting about him and OW being out. So that will be a xonsequence I have to deal with.
Well, even if he does, how classless. You going out does not imply another man, so taking you having fun with friends as a green light to broadcast his affair is a bit much.
And, T0, I know it would hurt to see something like that. But remember that you are not your emotions.
First of all, he's left. You aren't together right now, though you are still M.
Second, you know that whatever he finds with an OW is not likely to compare what he had with you, and sometimes they need that stark comparison to get it (they're so busy running and demonizing us so they can run that they forget all the amazing things we do bring to the table that other women don't necessarily have. Particularly one with a kid herself who supports a man leaving his wife while the baby is still a newborn...)
Third, he has done this before. Yes, ouch, but what was the outcome of that? He realized he was still in love with you. So what exactly is so scary about him doing it again? What is the likelihood he'd come to a different conclusion than that, especially when you're busy GAL and getting happy and non-anxious T0 back?
Yes, the house is a curveball. And, should he want to play house with OW and her son, rest assured his "new life" (at times separate from his kids but full time with a son that isn't his) is not going to be easy for him. Stepparenting - or being close to one - is incredibly emotionally taxing. I've done it. I can't compare it to having my own kids because I don't have them, but those who have done both say that stepparenting is harder work. All the work, none of the decision-making power, and tons and tons of conflict.