Don't Have Orgasms!
Here's the key to a long-term relationship: stop the guy from having orgasms. The more orgasms he has with you, the more bored he gets, at least according to the HuffPo. So, blueballs are the path to happiness? Fuck that, I disagree: the same orgasm is the problem. People who have their orgasms differently all the time have less of a problem with bordeom, and I know that from first-hand experience.