It is hard to say if cd's have more of a propensity for being bi or if being bi creates more of propensity to cd? For me I have always been a sexual explorer of sorts and see sexuality as a line with gay on one side and straight on the other and the middle as bi. I am on the hetero side of bi myself. I had a couple of bi experiences with couples later in life and enjoyed it but never felt an overt attraction to men at all. I had these experiences before I ever started crossdressing. I didn't start dressing until I was in my late 40's. Now, I have no interest in sex with a man in boy mode but in femme mode an entirely different story. I am not sure where you put attraction to other cd's in this equation but that is perhaps my strongest attraction at the moment.