What does the bible say about single fathers?

[Kevin]

I have sinned had premarital sex and was blessed with a wonderful boy. I want to try to make things right. I have tried to teach the mother the way of the lord but she continues to be a poor mother. She steals from family and friends, uses drugs, and lies about it. She is lazy, clamorous, loud, and stubborn. After trying time and time again i have little hope she will ever change. She has brought our family down to the brink of poverty. I have forced her out of the home so I can try to rebuild our lives. I want my son to have a good life and not be influenced by his mothers wicked ways. Is it a sin to seek out an new mother for my son or should I stay a single father and hope my prayers will be answered and she will change