[momknowsbest]

I'm currently pregnant, and my dilemma is such:
I became pregnant(not planned)during a time of personal turmoil, as I was hesitating to end my relationship with the man who impregnated me in favor of another man who I am currently engaged to. I left the biological father very shortly after finding out that I was expecting, however, he was aware of my pregnancy.
The man I left is not an emotionally stable person, I don't feel as though I could trust him with a joint custody arrangement, nor do I trust his family members, primarily his parents. They were always very accusatory toward me for the poor choices he would make for himself, and were verbally abusive to him concerning his relationship to me. Their verbal harrassement did extend to me more than once. They never seemed to trust or otherwise appreciate our relationship and that severely affected my relationship with their son. Bottom line: not a family I was interested in being a part of, nor one I want manipulating my baby's feelings and stability concerning its identity and family unit.
My fiance is a very loving and capable man who has been by my side throughout my pregnancy and is very willing to be "Daddy" for my baby. This is what I want, this is the best thing I could hope to provide for my baby. We have a stable, happy family unit and this is a situation I am terrified of losing to the paternal rights of a man I genuinely feel to be inadequate father material.
My fiance and I are going to be married before the baby arrives and I need advice concerning what I can do to legally establish our family and prepare for the possibility of any potential paternity conflicts with the biological father. Thank you.

[aaron]

If you want your fiancé to become the child's legal father, and to foreclose the possibiiity that the biological father will assert his parental rights, convince the biological father to consent to step-parent adoption after the baby is born.

[Xena]

If you want your fiancé to become the child's legal father, and to foreclose the possibiiity that the biological father will assert his parental rights, convince the biological father to consent to step-parent adoption after the baby is born.

There is a one year waiting period in Florida before a step parent adoption can be filed. Even if the bio dad consents once child is born, he can legally change his mind at any time in that year. In OP's situation, there's no way to legally bar the possibilty of the bio dad filing for his parental rights. The best that OP can hope for is to get married as soon as the baby is born and then hope that bio dad doesn't file for rights. Then, when the child is one year old, the OP can hope that bio dad will consent to the adoption.

[momknowsbest]

Thank you both for your advice.