For me, I think I have always been Bi.
But in the last 10 years and since my desire to become a MtF Transgender woman,
My desire has been more towards being together with other Transgender woman. Still with their boy bits as I still love the thought of playing with some ones (BB) boy bits.
I could think of a 100 fantasies just with some one else's BB.
And yes I would consider myself as a Transgender woman to be quite
submissive.
But the last time I was with any BB was over 20 years ago.
On a side note though, I do wish to have a beautiful, thin, sexy, busty (cis) woman desire to play with my breasts.
Ginger