If I am engaged, can I have my child's biological fathers rights terminated? The biological father isn't in the picture (NC)

Asked in Roxboro, NC - 10 months

In court, the bio dad of my child has been found to be abusive and neglectful to our child. He's had supervised visitation for a year, but hasn't seen his child. He has a history of substance abuse and has been court ordered to take a substance abuse class (and a battery class). He has also been found mentally unstable (and is on medications for his condition). He is failing to pay child support. I left my child's father and got a DVPO (which was renewed for 2 years) and have been through a temporary custody hearing (I was granted legal and physical custody). Now I am engaged. If we are engaged would that help to aid in the biological fathers TPR? I want to terminate his rights due to the fact that he is a horrible father in every way. Do we have to be married for the bio dads TPR?