imjustme38: Lack of jealousy could be a sign that someone is secure in their relationship OR could be a sign that someone doesn't care. It could go both ways. I guess it's all about how his/her emotions are and all.
Thats a very good point..

And very true.
A small amount of jealousy is natural, when you care and love for someone deeply; its just a sign that your feelings run deep, and anyone that says that they have never felt jealous in their lives I find hard to believe.
Its HOW you handle it that matters. If it just makes you realise how much you care for someone and gives you that "warm feeling", and it is left at that, well great.
If you are constantly worrying about where your partner is, or who they are with or with whom they are talking, then its destructive. For both yourself and your relationship.