If your relationship is based on “good sex”, it is doomed.

Sex is an important part of life, like going to the bathroom. But it is not the basis for a long term deep relationship. For that, one should have trust, shared values, and respect for each other. Those are far, far more important.

But I am assuming that one is not a shallow sociopathic person who lives for instant gratification. If that is the case, then this article is on point.

Lifelong sex with a single partner will not be sexually fulfilling for most people. Nature has made us to like variety. But nature also made us to pair, and most people experience too much jealously for a non-monogamous relationship to work. So most people are destined to be disappointed with sex if they create a lifelong pairing with someone.

But lifelong pairing is rewarding and enables one to create a family, and live a shared life, which in the end is more fulfulling than lots of sex — assuming that the shared life is a happy one. For it to be a happy one, it should not revolve around sex: it should revolve around shared values, respect, and trust.