Welcome to BB!
Unaltered rabbits can’t be bonded. They might get along for now, especially since they are quite young (rabbits tend to get along fine before hitting puberty), but it’s not a true bond. That can only be established after spaying/neutering. At this age, hormones could kick in very suddenly, so I would separate them until a month after they have been spayed to give the hormone levels time to go down. I don’t think it’s worth the risk of them fighting just to keep them together for a few more weeks. Also, baby bunnies are very difficult to sex correctly, if one of them is actually a male you could end up with an oops litter.
The fact that they have spent some time together so far without fighting may or may not make bonding easier down the road. If they did have a fight however, it could very well make things more difficult, rabbits remember very well and can hold a grudge.
Good luck with your two little ones! Do you have any pictures of them? 