>Is there any particular reason why God would give anyone a revulsion towards the gentials of the opposite sex?
We're fallen beings as the result of Adam and Eve's sin. God is not the origin of our imperfections.
>Is this a call to lifelong celibacy?
Sometimes. Other times it can be repaired or worked around in other ways.
>Also, can a woman romantically love another woman and be seen as Godly if neither of them have lustful thoughts or actions towards each other?
There's nothing wrong with close friendships and historically, friendships could be really close without anyone mistaking it for faggotry. That only came when societies started trying to normalize fags. Actual romantic love is another matter, and I'm not convinced it comes separately from sexual desire (barring people who simply don't experience sexual desire, which is rare).