Will they ever be husbun & bun?

I got Betty with all intentions for Bob to play with and live happily ever after.
I have two rabbits Bob and Betty. Bob had a bout of Pasturella and is now much better.
Betty has been on Baytril with seizures. Although fingers crossed she hasn't had one for a month.
Bob lives outside Betty lives inside so I can keep an eye on her.

Can they ever be put together bonded?
Or will they remain single?

Ideas, thoughts and suggestions welcome.
Thank You

Sorry can this be moved to chat?