Man sends wife a spreadsheet of all the times she denied him sex. Even if you’re married, a woman is not obligated to have sex with you whenever you want. It sucks to be in a relationship where you aren’t equally matched in terms of libido, but that’s no excuse to start logging evidence for a criminal case or a tax audit.
Discuss
Peggy Lu Who's Just Sayin' 
While I fully agree that NEITHER partner is obligated to have sex WHENEVER the other wants, sex is part of the marriage contract. Both partners are obligated to have SOME sex. If denial of sex was such an issue that he felt the need to document it, the SOME sex obligation of marriage is in question.
I have a problem with the word obligated. People need only have sex when they want to. They should never do it because of obligation.
And just me personally, but nothing would make me want to have sex with a person less than if they made me feel like I was obligated.
You really need to do better research into sex and sexual relations and sexual relationships. Maintenance sex is part of every healthy sexual relationship. This is sex to fulfill the obligations to have sex. Both partners have this obligation. Outside the first 3 weeks of a relationship it is uncommon for both partners to want sex at the same time in the same place. If you are not having sex to maintain the relationship, there is no reason for your partner to have sex to maintain the relationship. This means both of you are very unfulfilled and only having sex every other month or so. This is the death of a relationship.
Once you get past the honeymoon phase, if your not having maintenance sex (the obligation) you are killing the relationship.
Perhaps you should do some research into enthusiastic consent. I tend to believe that having sex out of obligation is more detrimental to a relationship than waiting to have sex until both partners are excited about having sex. In my experience, obligatory sex is detrimental to intimacy.
http://www.huffingtonpost.com/2014/07/24/spreadsheet_0_n_5618005.html
Fun for the whole family!