Welcome to the forums! Very sorry you're going through this!
Yeah I agree with Acc. You're his Plan B right now. The thing about being a Plan B is they never promote you to Plan A. That's reserved for OW. You have to distance yourself from him, make him feel like he's losing you. If he gets worried enough to think he may actually lose you then suddenly you look like a Plan A candidate again. He's doing some major cake-eating right now so you've got to put a stop to that.
He might be MLC, but it doesn't really sound like it at this point. Sounds more like a WAH, which may have been triggered by the 2nd miscarriage and his thoughts of wanting to have kids.
