Do I have any authority to demand/prevent that? Ours is a strange situation - we were swingers and she fell in love with a 3rd. It’s not contentious (yet?). We have 3 kids and I don’t want them seeing strangers in the house.

We were going to do the take turns sleeping at the house thing, but I turned around and came back when I learned he was there right after the kids went to bed. She was all pissy because I agreed to sleep at my parents place that night and other times we planned.

The house is in both our names, but I pay the mortgage as the breadwinner. She works but can’t afford an apt on her own.

I have a call into a good divorce attorney to ask for some advice, but figured I’d throw it out here.

Edit: we live in New Hampshire if that matters