This sounds like emotional abuse to me. You are a sensitive person that is who you are there is nothing wrong with that. It sounds like he does not appreciate that about you and he should. If truly loves you for everything that you are. You should not feel bad at all, it is natural for you to be feeling the way that you do because most of the time when guys are interested in "getting to know other girls" they are interested in much more. That is just from my experience. We need more sensitive people in the world today everyone is so cold and selfish these days. It sounds like he is doing quite a number to your self esteem. Do not hold your feelings inside that will cause you much unneeded emotional damage. No guy in the world is worth that no matter what. You are better off alone. If he wants to be with you then he should just be with you. If he wants to "get to know other girls" then he should not be able to have you as well. Don't let him have his cake and eat to. You need to work on yourself it sounds to me like maybe you need to lose him because you have self esteem issues. Weather or not they stared with him I am unsure, but it does not sound at all like he is helping things. Please just worry about yourself and take super good care of yourself in the end you are all you have.