I have a 5 month old boy and an 8 month old spayed girl. They are biologically brother and sister. We got him so that she could have a friend. We ve been doing the introducing stuff with hutches facing each other etc. she is normally stroppy but he is very laid back. We are now putting them together in a neutral space and he is running round humping her head, her back end her side… anywhere really. He even crouches down to give her a turn. He’s not being rough or biting her, he is just enthusiastic. But she is jumping into my arms and is hiding in my armpit. Do I let her do that until she gets used to him. Do I keep him away from her completely or do I get him chopped at the vets so that he calms down and is less excitable. Any advice would be great. She is a fair bit bigger than him and she will pop up n sniff him if we hold him.