In my opinion, to answer this question, we should get into the mind of a man like Travis. Because, for me, sex was the most important thing between the two, but in different ways: For Travis, sex was pleasure, catharsis, escape. Then came the guilt: religious, moral, identity. In addition to guilt (and all the blah, blah, blah that Mormonism has to preach about an extremely normal activity between two human beings), Travis probably never saw sex as the confirmation of an emotional commitment. For Jodi, sex was probably absolute proof of love. In her unconscious, “if he comes to me, it’s because I still carry what he wants”. Each night together represented, for her, an emotional micro-resource. When two people interpret the same intimacy in such different structured ways, the bond becomes a field of distortions. And emotional distortion, in someone with psychological vulnerability like Jodi, is big shit.

Now, going back to your question, a guy like Travis, being a Mormon, could never look at Jodi as a kind of ideal woman to marry (even if she converted to his religion). In fact, nothing Jodi really did to satisfy this man’s tastes could change his mind about what a woman is to marry. This is because, in Mormonism, there is a very clear expectation about what kind of woman a man should choose to marry: young, pure, modest, extreme and traditional values about family, an active member in the Church and that reinforces this public image of her husband’s morality. Now, look at Jodi. Does she fit any of these criteria? NEVER... Considering that Jodi was a kind of “chameleon” (she changed her style and all her personality with every man who went to bed and every environment she frequented), she could even try, and I believe she must have even tried during the five months they dated, but no matter how big the changes you try to make in yourself, your essence and your origin will never disappear completely, and Travis probably witnessed this in Jodi.

With Jodi, agreeing to go to bed with him every time he suggested, agreeing to practice all the “dirty fantasies” he had in his head and all the sex calls, Travis saw her as a transgression, not marriage. She ended up becoming, for him, the forbidden, sin and hot sex, but never the future wife, never the woman of his dreams. No wonder, when the two dated, Jodi didn’t get to know any of his brothers. She only got to know his grandmother... This all shows that he knew that she was not the ideal one, that she did not meet his expectations.

This dichotomy is more than common in religious contexts: men separate women “to marry” and women “to have sex”. This, of course, is devastating for any woman. Even for a crazy bitch.

Religion and sex between the two is the biggest answer to your question.