Is it uncommon if you're bisexual as I am that the way you are sexually with say a women is different than with guy? What I mean is that with a woman I will perform anal sex on her but with a guy I want the one anal sex is performed on.I tend to be more dominant with women where as with guys I am what I think is called a bottom
It is perfectly normal. I have known people whose sexual preferences can alter simply based on the appearance or personality type of the person they are with. Gender variations are no different. Things don't have to be black and white.