Rabbits are quite lovely once they've been neutered! Mine, I have 3, are all quite happy frolicking together. I have one neutered male
and 2 females one of which is spayed. My spayed female is way more friendly then my unspayed one. They have always gotten along, but I have my female spayed before the girls were introduced for the first time. Otherwise I hear that they are territorial also. Ruth was showing signs of being territorial way before she met Pinkie. But once I had Pinkie spayed Ruth must not have seen her as a threat and she has never had any issues with either. Snowball thinks he's in love with Ruth but he can't DO anything so he and Ruth are content snuggling on the floor together. He likes snuggling with Pinkie too! He is quite the ladies bunny!
Boys do spray if they have females around. That is what spurred on his neutering. I did have a male that was an only bunny and he never did spray, so I have to attribute it to the girls making him all randy.