You made your choice when you jizzed in her bits. Don't want a child? Don't jizz in the lady. Want a child but the lady doesn't? You gotta find a different lady to jizz in.

Sometimes, if you trust a lady enough, you two will decide on a strategy on how you can jizz in her bits and still not have a kid. However, none of those methods are perfect and you are explicitly taking a chance.

The risk you take when you jizz inside a lady that doesn't want an abortion is that you have a child. If a lady does not want an abortion and you don't want a kid, don't jizz inside her. You don't have to be a participatory father, but you will be expected to financially support whoever ends up raising the kid, unless you both choose to give up the child for adoption.

Like, fuck guys, it's not this difficult. I'm an idiot and I've figured it out.