Legal Question in Family Law in Georgia

You have created, in not getting a divorce before finding someone else, a gigantic legal mess.

It can be fixed, but not quickly. You need to see a lawyer ASAP (and should have done it many months ago - had you done it even during pregnancy it would have been simpler). This is not a do it yourself project. It will help a great deal if your husband and the father are both cooperative.

You will need paternity tests done on both men, yourself and the child by a lab acceptable to the courts. At that point a divorce can be filed. If all parties agree, language can be written into the divorce that determines your husband is NOT the father. Legally, he now IS the father until and unless a divorce court says otherwise. (If this is not properly handled in the divorce your husband likely always will legally be the father).

After that is completed, your boyfriend can legitimize the child and do other things such as the birth certificate.

This is a somewhat complex situation that requires an experienced lawyer. There is no way to do this with forms.