If you’re married to someone and bring a 3rd into your relationship to spicy things up it’s because one of you or both were bored sexually and wanted to see other ppl. So now it’s an open relationship. Which has ties to hook up culture. Play wit ya mama. Not me I stand on that
To the point where finding monogamy within the community is impossible and if you get into a monogamous relationship you get cheated on for the thrill of a hookup and a quickie or your relationship is made open. So your partner can be free to be sexually active with others