I would want a woman involved if I decided to explore bisexuality. I don't see myself with a man, or a cross dresser. A she male is a possibility since having sex with a she male is a fantasy.
I'm not sure what I would be able to do with a couple. I not sure if I want a man to suck me off or fuck me in the ass while I went down on the woman. I'm not sure if I could fuck him in the ass while he want down on the woman. It's doubtful that I could stick a real cock in my mouth.
I guess that I am somewhat confused sexually. I enjoy being with women, but there seems to be some unexplored territories that are intriguing.