I agree with Jersey, separating was the right call!
I’m guessing by Bailey’s age of only 1 year, that she was either in “bunny puberty” or still a baby when you went through the bonding process. The recent change in location also could have set things off. Unfortunately when one rabbit is in-tact still the bond can be more easily upset.
If you would like to try to re-bond them (which BunBun might like), you’ll want to get Bailey spayed (this is a good idea anyway to prevent reproductive cancers) and give her time for her hormones to settle down. Then you can go through the bonding process with them again and see how it goes.
Poor BunBun, he’s probably a bit confused by it all!
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The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.