FWIW, I think "gay" and "straight" are made up ideas drilled into us by a repressive society. The day when we realize that we are attracted to people for who they are, how they act and how they treat us (instead of by genital category) will be a glorious day.
Poor guy, he's been telling himself all his life that he's straight, and now he finds someone that doesn't fit the standard category type. So maybe he decides 'what the hell' and breaks thru some of those societal walls. Good for him! But people don't change over night, and you will be the canvas onto which he will work out his existential crisis. Do you really want that?
