My male is smaller than my female (don't know if he'll stay that way or just has some growing to do...) but I catch him occasionally biting at my girl's face when they get face to face at night. She just turns around and walks away. She's had no visible wounds as of yet. I just really want another one!
Well with enough space and hide spots and if you keep an eye on them you will likely be able to house a few girls with a male.