I'm so sorry, @Waffletots.
I'm trying to imagine waking up one day in what I thought was a happy marriage and discovering that this is who my husband really was. And to find out in such a way, and at such a time.
It's spectacularly cruel. To progress with the pregnancy when he knew he was having an affair is a callous enough deception on its own. But his actions when caught give the strongest clue as to the real him: the mind games he's playing through his silence and later his cold, emotionally manipulative, unapologetic message. He actually sounds like a psychopath.
You poor woman. You must be in so much emotional pain right now.
Sending you heartfelt warm wishes, positivity and the goodwill of another internet stranger 