I raise rabbits for all purposes, although no house rabbits (tried once) rabbits are usually fine alone. they are not like other larger animals (horses, steers, sheep, llama) who need company.
Rabbit bonding after the maturity age can be hard. It is a slow process with MUCH supervison. some can fight, some will be fine.
Babies can grow uptoghther & live together forever, some must be seperated right after weaning.
just depends on the two indv. bunnies.