This guy sounds incredibly insensitive to everyone else's needs: yours, your kids, and his kids. He wants to throw your five year old in a room with two teenagers right off the bat? To have his kids meet you for the first time when you spend the night? And his response when you suggest an alternative is to tell you that you are trying to make him lie and get off the phone?

You can't go wrong trusting your gut on this one. I'm glad you aren't letting him bully you.