Why Jealousy Is A Useless Emotion
Jealousy spurs behavior that causes jealousy
Being jealous is actually a bit of a self-fulfilling prophecy. Perhaps your partner wasn’t up to anything, but your checking in every half hour and smothering him could drive him to want to spend time with his female friends who don’t smother him. I’m not saying jealousy will drive him to cheat, but it will drive him away, which will, in turn, create more jealousy.