I got my bella when my bunny was a yr and a few months old.
I also got bella for bunny to have a playmate.
She dose very will with her but I know there REALLY REALLY jealous of each other. Bunny has been the baby for a yr and is still treated like one. Even my mom babies her. Let just say she knows how to work me over to get her way

Once I would not let her go out side to see who was out there and she shock as if she was cool or something, until I let her out to see what was making all the noise out side... it was just the people that lived across the rd, thou!! Then she was fine. She is such a brat sometime
I know some where in that little monster heart, she loves Bella. She would not freak out if bella whined or if some other person petted bella, if she did'nt
She acts like she could care less about her, but when it really comes down to it, she loves her to little peaces!
I say if you really want to get a nother furbaby, so the one you have know has a play mate... go for it!! I would not wait too long thou! the older doggies get, the more the dont like to play so hard.
Best wishes!!
Olivia, Bunny and Bella