[Jennicat]

I would disagree with the notion that rabbits are "not as social" as guinea pigs. In my experience, they bond much more strongly than guinea pigs do, and spend a lot more time engaged in social behaviors like allogrooming. That's not to dimish the social needs of either animal, but rabbits tend to bond more tightly in my experience.

We've had similar experiences with Sophe, unfortunately. Male/male seems to be the most difficult pairing, we've got tons of female/female pairs, and male/female pairs.