it's not often I cry at threads on here, but I did when I read your latest, Lou.
YOur body is seeing to your needs re eggs, beans; and your mind is too re anger, which is coming in spades. You're well-loved on here, as well as in real life. You are rich indeed.
I wonder if he was leading a double life (trips half the time for 'work') which is how he could move his stuff out lock stock - from his 'flat'. He's not even human, is he? He's encouraging you to abort a much-wanted pg, because it doesn't fit in with his plans - how calculating and cold is that? The OW is an unknown quantity for now - she could be a cow, she could not - but he certainly set the scene, didn't he: I wonder if she had any idea he was still living with you (much less ttc). He probably told her he was off half the time for 'work' too. I really wouldn't focus too much on her iiwy. I do suspect he is the villain across the board.
btw please don't fall for that breakdown/midlife crisis shit. He'll probably pull that out of the bag at some stage as his intricate deceit falls around his ears and buries him - don't believe him. It's hard not to but there are some individuals around who aren't wired right, something is missing. something essential isn't there.
have you copied your threads btw? it's good to have them for later times as you come to terms with all this. It brings a much-needed clarity. I've been embroiled with individuals like this and years later the clarity is still coming in dribs and drabs. Not that you care any more after time...
Keep going, you're made of strong stuff, that's clear. It will be the making of you, that's clear too. Try to trust that at each stage you'll know what to do - legal, baby etc.