Not everyone is straight. Nor is everyone so closed when it comes to sex. People like many things. I'm bi-sexual and I have no problem with most anything, except foot fetishes. But I'm not moaning and groaning about Jenny giving the MC a footjob. If it's optional as people are guessing, what does it matter? You take the "Eve is female" path and others take the "Eve is male" path.
What the hell is there to be mad about. If anything, you're being greedy as hell, trying to impose your wants on others by not giving them the choice at all or you getting mad as hell, as you said, about it if they do. What does that entail? You blaming them, ridiculing them, what? It's a fucking game, so there's nothing to get mad as hell about.