Its never too late to get a companion! As long as he is neutered? Get him a neutered female roughly the same age from a rescue there are an estimated 33,000 rabbits looking for loving homes. Theres loads of stunning bunnies at
Rabbit Rehome - Adopt an unwanted bunny from a rescue centre and a really good forum there with a rabbit in need section (rabbits looking for homes) Rescues will help you bond the buns or do it for you too.