If I had a baby moms, I'd prolly still be with her.
When I fukk chicks, it's for a reason.
But for your scenario, I'll pretend that I do fukk women who I don't believe are suitable enough to be my childs mom and my wife.
Of course I'd break her off with cash. Regardless how our relationship is. I'd give her the max amount of money that could be considered a gift without being taxed. Then I'd buy her any house she wanted (as long as it wasn't unsafe for my seed and not over the top) along with any 2 cars she wanted. One car for her, the other for my seed (a minivan type joint). I'd open an account or have an accountant set up enough money to pay for her utility bills + car insurance for as long as my kid is under +21.
I'm positive, I'd only knock up a chick who's been through school....but in any event that she wasn't in or through school, I'd put her through it if she wanted to go. Hopefully she'd want to, considering she really doesn't have to work much at this point. Hopefully she'd understand that this ride won't last forever, and that when lil Msims grows up she might be shyt out of luck...so it would be best for her to get herself together.
Then I'd set up an account for my seed; college fund-type shyt.
Then after I invest more of my money, I'd set up a real nice trust fund for my seed.
If she needed anything I'd have her even after my kid is grown, tho. As long as the things she need are minimum. And by tat point they should be.
That's that.