There are a couple books at the library that are all about parenting plans & agreements - not sure of the names but I looked at them when I was trying to write up a settlement. ( I'm still not divorced) My stbx went on a trip with his girlfriend while he was still living in our house, her husband died and they got money from a preschool garage sale to help her with finances and they all went to an amusement water park a couple of hours away and stayed in the same condo - my stbx and daughter on the pull out couch - her sons and her on the bed in the bedroom - with the door open so they could all see each other. The kids were 4,4, and 7 and my lawyer said I could not do anything about it. The stbx did not even give me an address in an emergency - only a cell phone number. So I am not sure about putting no sleepovers until engagement, marriage - some states don't care about that . I guess CA is one of them. I think in some states like NC, that would be a big deal.