If the gay man was in love (mentally) with this woman, he could most likely psychologically convince himself he was sexually attracted to her, whereas he would be blinded by his love for her emotionally and not care his lack of interest to her sexually.
Yeah i'm pretty sure a girl could do it. It's just not any girl. Britney's sex appeal has turned a few gay's on, so it's not impossible. Oops didn't read the title correctly lmao! no a girl can't turn a gay man straight, but she can probably open him up to bisexuality.
If a "gay" guy suddenly falls for a girl, it just means he was truly bisexual.
The "Pretty Little Liars" book had that issue. Emily fell in love with a girl, dated her, but then was attracted to a boy.