You should get your bunny spayed anyways for health reasons. I believe its something like an 80% chance they WILL get cancer in the ovaries or uterus if you do not spay them.
From what I've read up, its easiest to bond a spayed female and a neutered male. It does take time and patience though!!! After you've gotten your girl spayed wait a while (my vet says at least three to four weeks) before bringing her on a couple of dates (to your local bunny rescue/shelter). Basically if they aren't fighting, its a good sign. I've read there are times where rabbits just do not bond, but you need to make sure your bonding process is consistent and done the right way to ensure they will get along.