Hi Beka, sorry I've been so engrossed in their bonding that I've forgotten to update!
Charlie and Layla met in the bottom of my shower and were instantly friends. In the first bonding session they were lying down next to each other and Charlie was grooming Layla. These sessions continued all weekend and I eventually got sick of being in the bathroom (no heating, winter) and we moved them to a carpeted NIC pen in our living area. The licking and lounging continued until Charlie realised that Layla thought she was boss and then came the humping, nipping and bossiness that has always been a shining part of Charlie's personality.
Now we're in semi-neutral space and they're getting along great. Occasionally there is a power struggle but they seem pretty equal now, both grooming each other and stuff. The only problem there is that Charlie seems to be food possessive and it's impossible to feed them
things when they're together (pellets, tomato, carrot but lettuce and hay is ok...strange bunnies)
They aren't ready for free roaming yet cause the rest of the house is Charlie's house and when ever we attempt to put them together Charlie chases Layla around and bites chunks of fur off her fluffy bottom so I'm following markusdark's advice and leaving them in semi-neutral space 24/7 for two weeks, hoping that afterwards Charlie will be so used to Layla that the biting will stop.
So it's going better than I expected and Charlie is really happy to have another bunny around, he lies on/beside her all the time and has become her shadow and hopefully they'll be out and about in the house very soon without any problems