Do hermaphrodites disprove some Christians' interpretation that God is against gays?

Here’s today’s fun experiment:

Hermaphroditic humans can have both sets of functional sex organs. I have heard Christians claim that God doesn’t make mistakes. I have also heard them claim that God prohibits gay sex. Do you see the problem yet?

I view ‘sex’ as ‘sex’ without the need for modifiers. Christians, among others, differentiate. Here’s the catch: a hermaphrodite is incapable of having ‘heterosexual’ sex with someone without, automatically, having ‘gay’ sex at the very same time.

How do people with deeply held beliefs in religion-based sexual discrimination answer this dilemma?