I don't believe temptation and the fall in Genesis 3 is specifically about sex, but there are things in the language that seem to link them.
I can't shake this question: Is there anything more strongly linked to shame and sin than sexuality? Has it always been this way?
It's an extremely heavy topic, and while I don't think Genesis 3 is about sex, I think that the hints in the language are meant to help us understand that the brokenness we experience in our sexuality is like a living parable for what spiritual brokenness is.