Her son's father moved back to california for "work" reasons as she puts it and they have been seeing alot of each other lately. I have done my best to be as supportive as possible throughout this whole thing, I take her over to his house so she can spend time with him and her son, i make sure I watch her son and his daughter (from another relationship) so they can do what they like to call "parent duties" . This worked out fine for all of us for about 4 months but now she is saying she needs to spend the night at his house on Fridays because she doesn't trust him with their son, how can you not trust him?