One thing I’ve learned about straight guys is that they’re attracted to women, not necessarily a particular kind of genitalia. If a trans girl fits their feminine preferences they’re going to be attracted to her. Knowing that she’s trans doesn’t make a difference despite the societal hang ups.
As far as the gay boys go, I could see him being attracted to femme twinks who do drag. I had a strong inkling a couple years ago that he and Liam Reilly had a thing going on. They were openly flirtatious on Twitter and hinted at being close.