How important is jealousy in a relationship?

We all know the chronic, corrosive nature of jealousy Cemeteries and Penitentiaries are filled with unanswered questions and bad decisions all victims of jealous rage. But Jealous rage is an extreme. Is it possible to have a healthy amount of jealousy in a relationship? Is make-up sex the new white meat?

Gather round folks you just might learn something, and if you know something call in and share something.