Does This Make Him A Lesbian?

I really don't care if Bruce Jenner becomes a woman, stays a man or an it.
But this makes an interesting question.
From the NY Daily News: Bruce’s got a new date!
Former Olympian Bruce Jenner made good on his plan to keep dating women while he’s reportedly transitioning to one himself.
Jenner, 65, was seen Thursday heading to the tony Grill on the Alley in Beverly Hills. He wore baggy jeans and a blue button-down; his companion had a sheer black dress and fuchsia heels.
The former athlete who took gold in the decathlon at the 1976 games clearly hasn’t slowed his spending since he was involved in a fatal car crash in February, a four-car pileup that killed one driver and hospitalized five others.  http://www.nydailynews.com/entertainment/gossip/jenner-hits-town-mystery-date-article-1.2142104
So, if a guy is about to have his nuts chopped off to become a woman, if he dates a woman, is he a lesbian or not?
While I don't care, based on the Jenner news, apparently millions of Jenner/Kardashian fans may want to know.