heres my problem.. Me and my ex gf had a little boy who is now 8 months with have never been to court , we split time with him ,I have him sunday thru wed and every sat that my ex works, so far we have been splitting his bills up 5o/5o and I have my proof ..she moved out in july of 05 and it is now Sept... she moved to a apartment complex close to mine so that we could be close for the baby....
My problem is that she now wants to move in with a guy shes been dating for 3 weeks... and being that she wouldnt have her apartment anymore my son would be around a guy I dont even know.. is there anything I can do to prevent this ?? or do I just have to go along with what she does

Thanks

I'm not sure what the laws are in your state, but my divorce decree states that my ex nor myself cannot have any overnight visitors of the opposite sex. (judges allow that in AR) I'm married now so that rule is void for me, but not for him because he is single. It doesn't seem like a healthy situation for the child anyways so talk to a lawyer and see what they can do.

Try reconciliation.
That aside, you can try to get full-time custody of the child, but that would not prevent the child's exposure to the boyfriend since the mother would still likely get visitation and joint custody. As a practical matter, you both are young and will date again, and at some point these persons will have contact with the child. So it is going to happen. Even if you get it in a decree, it is still going to happen and next time you might be moving in with someone. Ideally, the parents need to work this out in the best interest of the child.
So I am sorry. You can try to talk to the mother and ask her to slow down and to move in with you if she just needs to live with someone or see if there are relatives or family friends to live with, if you both can manage that.