Well, my game is restricted so that only people of legal age can find it, that should be conclusive proof that this game does not promote homosexuality or heterosexuality among children. It is just a game aimed at those of us who like this content and want to consume it.
Regarding your decision about the sexual orientation that your children should have, I think it is good that you have your preferences, we would all like things to be the way we like them. I just hope that, if your children end up being how you don't want them to be, even if you don't support them, at least you don't treat them badly. Life is already harder with people who deviate from what society considers normal, without the people who love them the most also turning their backs on them, like their own parents.