Sounds like a friend of mine. Bisexual all his adult life, though definitely with a preference for the ladies, then one day gives me a prototypical "coming out of the closet" speech. I finally figured out that he was "coming out" as a transgender . . . while in a monogamous relationship with a lovely young lady, who is inexplicably going along with his quest to become a lesbian woman.
Even my gay brother thought the guy was confused beyond belief.
All DUFU-ish joking aside, if I had a friend like that, I’d be polite in telling them to seek some counseling.