So my fiancé has a child from a previous relationship. They were not married. The child is 3 1/2 yrs old. They were together for about 4 months after the baby was born when he found out some things about their relationship and he broke it off. He still wanted to be in his childs life and has had her in a joint custody type of situation (he has her half the time in a 2wk period). This was mutually agreed upon i guess by the two of them and there were no legal documents drawn up. I have been around and in the childs life since she was about 15months. But since we have recently become engaged there have been some issues come up that I think may stem from jealously..etc.. The mother is catholic and enrolled her in a catholic preschool without talking to my fiancé and recently told him of this. One of the days she is to attend is on his parenting time that they had mutually agreed on prior. However, we are not catholic, and are in fact nondenominational, and have already enrolled her in a preschool which she already attends during the time the child is present in our home. When he told her she was already enrolled in one during his parenting time she stated "well if you don't want her then I want her more". Long story she was raised very Catholic (which is not a problem) and went to catholic school, but this is not something he necessary supports or wants for his child and she is aware of this. She is a very passive aggressive person with him because she knows that he is a very giving man. He has done things above and beyond for her even though they aren't in a relationship. I feel like she is possibly jealous that he is now engaged to another woman and is trying to get full custody. They have had a joint arrangement the whole childs life and it would kill him to have his child only every other weekend. Is it likely that a judge would change this if they got a legal document drawn up and couldn't agree to joint? He has no psychological/drug/abuse problems whatsoever. I told him he needs meet with a mediator pronto to get something legal worked up so these things aren't an issue. It kills me that a mother would want to remove the childs father out of her life out of jealously. Thoughts?