A couples sex life may ebb and flow over the years for any number of reasons: physical or mental health issues, having kids, side effects of certain medications, stress, relationship problems and sleep issues, among many others. Sex therapists say those dips are totally normal.

Why do most long-term relationships end?

The most popular reason for women ending their long-term relationships was that their partner wouldnt take them out on dates. And in the least shocking news of all time, the main reason most men (8.2 percent) ended their long-term relationships was because their partners didnt want to perform oral sex.