Two does may or may not get along long-term. I once sold 3 does, two sisters and a similar-age doe from another litter, to someone when the rabbits were about 8 weeks old. I sold them a little buck at the same time. The does were all kept together, the buck of course was kept separate. The buck was a very outgoing  sort, and soon had the family wrapped around his paw. The family never really bonded with the does, and a few months later returned them to me. One of the sisters had become rather aggressive with the other two, and was being housed separately. I was told that the other sister and the unrelated doe were the best friends in the whole world, and I had to make sure that when they were re-homed, that they went together. Within a couple weeks of coming back to me, one doe's "best friend in the whole world" took a piece of hide the size of a postage stamp off her backside!
 
I think it safer to say that some rabbits are social, some aren't. Friendliness and sociability aren't natural behavior in adult wild rabbits, they seem to be traits that we are now breeding into their domesticated relatives. The likeliest pair of friends would be a male/female pair, but that means a whole lot of babies in short order unless both are altered (an unaltered male can be a real nuisance for a single doe, even if she isn't fertile).