I have 2 does. They are true sisters. They weren't spayed until they were 6 months old. Prior to that, the one would constantly hump the other (sometimes getting the wrong way around :roll
and this happened quite frequently. They didn't start to squabble about it until they were about 5 months old when Coco took umbrance to it. These squabbles were Coco turning on Thumper and grunting and chasing her, but no fur flew. It did begin to get worse - one time Coco actually pinned Thumper down and grabbed/bit (?) Thumps on the neck but no blood, but by then they were booked in for their op anyway.
So, the point I'm trying to make, is that you haven't necessarily got a boy and a girl; it could quite easily be 2 girls - or even 2 boys!
Also, although there is no action taken at present, they could start to squabble eventually - equally, however, they might not.
My advice to you is keep an eye on them and if they do start to squabble keep a closer eye on that. When mine were chasing each other it didn't look very nice, particularly when Thumper was pinned down and grabbed/bitten as she squealed. However, there was no fur loss, nor was there any blood - but rabbit fights can get very nasty indeed.
Ensure they
are both girls; if they are then go as above. If not you will need to separate them as they can breed very young.
PS Since being spayed they get on very well indeed with only the occasional spat in where Coco (dominant one) will grunt at, nip at and chase Thumper. She occasionally pulls out a mouthful of fur but then they're grooming each other again. I have no need to separate them whatsover; they're sisters! They're bound to argue!:lol: