The main reason that men are possessive is because they don’t feel worthy of the relationship and are afraid of losing the woman in their life. It may start out simple and harmless enough, with him preferring to keep you with him all the time. He may start trying to control your time and get upset if you go out socially with friends. Instead of going out, you may end up staying at home together all the time and he may even start coming up with situations where he needs your help that are merely lies to keep you there with him. In many cases, jealous and possessive men go a step further. They go on to alienate you from your friends and may begin criticizing you and working to lower your self-esteem so you won’t leave him. Then he may tell you that you are so lucky to have him, since he loves no matter what. In this way he builds up dependence in you, and you are left dominated and isolated within the relationship. Men who are confident and happy with themselves will not have these problems with jealously and being possessive. While he will definitely want to spend time with you, he will also be happy that you are independent as well. Relationships should be about being your own person but sharing time together, and trust is important as well. http://maryelena.hubpages.com/hub/Dealing-with-Jealous-and-Possessive-Men
Women marry men hoping they will change.
Men marry women hoping they will not.
So each is inevitably disappointed.