He will never admit this and tell you and leave to be with her because then to your kids, his family and you he’ll be the bad guy. You need to decide and act upon your decision whether or not you’ll put up with his cheating because it’s only going to get worse. You should 100% inform his family about what’s going on because they need to aware of what type of snake their son is trying to bring back into their lives.
So were you looking for advice or just someone to agree with you?
There’s plenty of on-line support for free – for example 7 cups. It’s there if you want to make the most effort to find it
You fiancé is 100% cheating on you emotionally at best, physically at worst. He had no business being “friends” and hiding it from you which means he absolutely knew this relationship was inappropriate. He’s been lying to you whether it was to your face or by omission. He’s clearly telling her deeply and very personal things about your lives, pregnancy, children and who knows what else. Their level of intimacy just confirms this is an affair.
He will never admit this and tell you and leave to be with her because then to your kids, his family and you he’ll be the bad guy. You need to decide and act upon your decision whether or not you’ll put up with his cheating because it’s only going to get worse. You should 100% inform his family about what’s going on because they need to aware of what type of snake their son is trying to bring back into their lives.