I hope you're documenting all of that. Any family court judge worth his/her salt isn't going to look too kindly to his squandering joint marital assets on his infidelity. At a MINIMUM, such funds should come out of HIS side of any financial settlement from the D.
^^^THIS^^^ When I received the D petition I was surprised to find a standard restraining order attached to it (my W didn't do it, the county we're in automatically applies it). Among other things it prohibits spending money out of joint accounts beyond that needed for basic food and bills. It also prohibits assuming new debt, hiding assets, harming existing property to devalue it, etc. I think it's a GREAT idea based on some of the stories I've read here. If there's not one in place automatically when the papers are filed you might talk to your L about getting one in place. And yes, document everything your H is spending!