I think jealousy is one of those things that can't be changed. It's just the way someone is.

they can not be openly jealous but it doesn't mean they're not seething underneath...

most people are at least a little jealous in some way or another but when it's overboard it's not healthy at all. I've had troubles with relationships because apparently i'm not jealous enough ?!?!?! it would seem that if you're secure and confident enough in your relationship that you don't feel the need to grab every guy by the throat who tries to dance with this particular lady that you obviously don't love her or else you'd be jealous....

women are nutters for the most part