Bad Boy's Baby's Mama

It was just one night three years ago that they didn't think would mean anything. Until she got pregnant with twins. He never had a clue until now. She has already started a life and he never had a part in it except maybe providing the sperm for her two angels and she was perfectly fine with that, but when he shows up out of the blue will he change everything? Or will he always just be the father of her children, nothing more?