As someone who grew up in the evangelical church in the 90s, my early understanding of sexuality centered around delayed gratification. Wait for sex until marriage, and God will provide a great husband, and hey, even the sex will be better (and of course, marriage could only be heterosexual).
Rejecting purity culture sounds simple, but it can take time and unwinding of your former worldview. Personally, the residual effects of purity culture continue to plague me, because it was never just about abstinence, but for women, about keeping your body covered, and for anyone who read I Kissed Dating Goodbye, also about restraint in kissing, hand-holding, even being alone with a love interest.
The books below come from a range of voices and experiences, some specifically addressing Christian purity culture, others more broadly discussing sex from an academic, journalistic, memoir, or anthropological perspective. They are loosely ordered by level of conservatism so if you are very far along in your deconstruction, you might skip to the end.
Do you have a favorite not listed here? Tell me on Twitter: @danifankhauser.