I've been following this thread since it was started but I thought I'd butt in and share my thoughts especially because I see a lot of my bunnies in yours. For starters, I've attempted to bond my male with two different females and neither bond worked out. Being around other bunnies makes him jumpy when he's usually a very confident boy. I've accepted he's better off alone. The first female was swapped out after a fight that Bugs got hurt pretty badly during and I felt it wasn't fair that she was double his size and being a bully. My second female and Bugs did amazing at first (kisses all the time, snuggles, all the good stuff) then she began to get more and more humpy despite whatever I tried. He didn't like this and one day he just snapped. He ended up biting her directly above her eye and broke the skin after a nasty tussle. This happened to be the night before move-in day during their second sleepover. If I understand correctly, the white one is the original bun? In your videos, I've noticed they don't seem to hate each other but they don't seem in love yet either. You seem incredibly calm! During my first attempt, I was terrified. I kept the oven mitts on the whole time and freaked out whenever they moved. The positive vibes I'm getting from just watching the videos are rubbing off on them which is helping them calm down a lot! I wonder if it's possible original bun is being protective of you. I definitely felt this during bonding. I agree with @Imbrium that they should not be able to bite each other at all through the pens. I've seen pictures of sweet little bunny noses that were scarred and just not great looking after incidents like you experienced earlier. I have chicken wire wrapped around my pens to stop nipping. It looks pretty tacky but it works. Persistence is key with bonding. Enforce good behavior with treats and veggies and end fighting/negative nipping by forcing them to snuggle next to each other and stroke them for as long as you can. Remember you know your bunnies best. It seems yours just need time to get to know each other more. I like to think of it as two completely different people being forced to marry each other. First, they're completely against it and slowly they realize the other person isn't actually that bad and then eventually they fall in love. Good luck and keep the videos coming! I found your voice soothing, lol. @K1marie I don't know how you haven't given up. You're incredibly patient and I hope everything works out for you and your buns sooner than later. @Flakes you have an amazing sense of humor!