With respect, it's not clear to me that you need help at all

Wanting to have a family is fine and admirable and something we have in common, but if you haven't met your partner(s) yet, then you know nothing about them yet - not even their gender. As the proverb goes, "if you want to make God laugh - tell him your plans". I'm not agreeing with the "you can learn to like it" crowd exactly, since they're a little creepy, but I'm not sure what the problem is. If you're MOSTLY attracted to girls, then you'll PROBABLY be far more involved with them, but it's a question that doesn't need answering until you have a serious candidate. Once you have a serious candidate, your feelings will likely make the answer clear enough. And you're right, being honest with probably-her is the only completely mandatory thing, there's workarounds for everything else.