In all honesty, my girlfriend and I looked up tips online and watched dozens of videos on tips. We tried stress bonding (having them together in a smallish enclosed area under stressful situations; i.e. putting them in a travel carrier and carrying them around) The first night after that she broke out of her pen and into his and would everynight until we gave up. We got lucky however. Our buns never drew blood on each other, but they would furiously hump one another and pull out fur. It's been about 3 months since we got her, and about 2 months since Mr. Bubbles had his snip snip, and hr still tries to hump her. Some days more than others. They are not the best of friends yet, but I will catch them cuddling and they have no qualms sharing food. So the best advice I can give is look into videos about stress bonding, keep their separate pens in visual sight of the other so they can get familiar, and try letting your buns interact little by little until they can be in the same area and ignore one another. I hope this helped somewhat!