OP, he will not be transparent about other issues. Move on. It is probably one of the reasons he is divorced.

Anonymous wrote:Your BF should have stayed in hotel, while the ex (co-owner of the house) stay with kids at home.

This is ridiculous. His house, his kid. Either he's going to sleep with his ex-wife or he isn't. They'd actually be more likely to do it in a hotel where the kid couldn't hear. If you're that insecure, you need a different relationship.

Anonymous wrote:Your BF should have stayed in hotel, while the ex (co-owner of the house) stay with kids at home.

Or stayed with you. Transparency and open communication are very important in a 2 year relationship.

Your BF should have stayed in hotel, while the ex (co-owner of the house) stay with kids at home.

The fact that this wasn’t disclosed to you earlier is very problematic.

He obviously is not coming clean because he is hiding something from you.

I would be miffed if I left for three days while the ex moved in for those days.

Your BF needs to come clean on a few things w/you.
Since they are no longer a couple, it is only proper if she stays in a hotel while she is visiting.
Especially since you two are a couple now.

You sound insecure. He will always have history with the ex and they have kids. Either execpt this or walk away.