I am a CA father who was living in a similar situation. Even though you acknowledge he is the father and even if he is on the birth certificate, becasue you were not married when your child was born, you do not share custody. If you truly want to establish joint custody, you will first need to have paternity established by the court and then you can establish joint physical and joint legal custody. I just went through it when my X threatened to leave the state with our daughter. I had to hire a lawyer and rush into court on an emergency basis. If you truly respect your boyfriend and care about your child, you should get the process done now, when things are good. Because it can end up being a huge point of contention in the future and, as in our case, was the reason our relationship finally fell apart. If you both agree, you can get the forms from the court house and do it yourself.

