The things I mentioned in the other thread don't make me want to be nasty about it. It isn't that kind of jealousy for me, just more of a saddness. The only "real" jealousy I have felt it when I was with my ex. It was the only type of jealousy that seemed to turn to anger... when I think of it my heart feels like it is clenching. I don't like that in myself, but am not sure how to stop it either. It is the only time I have ever come close to feeling out of control.
Oh and I have also had jealousy over pregnancies before too. That one has consumed me before and almost ruined an amazing friendship. But these days it just makes me feel unbelievably sad