Step-parent adoption

[stealth2]

I'm in New Mexico and I know who the father of my son is. My question is my sons bio-logical father has had nothing to do with me or my son since I was about 3 months pregnant. Since I was about 6 months along in my pregnancy I met my now husband and 7 months after my son was born we got married. My husband now wants to adopt my son. Do I need a lawyer? Again my sons bio logical father hasn't done anything at all for his son we both agreed that he would pay only $25 a wk for his son and he hasn't done that he's only seen his son 2x's and my ex also is dating a woman who has threatned to take my son from me. What can I do?

You'll get a better response if you start a new thread.