What would be the morally right thing to do in this situation?

A 38 year old man starts having with a 22 year old woman he's known less than a month. He already has one child of his own and is a single dad. She lives in a small apartment by herself that's not big enough to raise a baby in, doesn't have a college education, and doesn't have much work experience or a good job. He lives in a 3 bedroom house and has a good career. She gets pregnant. If they keep the baby, what is the morally right thing for him to do? Should he move her in with him, or should he just help financially support her from afar, or something else?