My Fear of Abandonment

I have a terrible fear of being abandoned by my boyfriend. When I first start dating someone, I always think sooner or later he'll realize I'm empty and leave me. I am envious of other women he talks about, even if it's a movie star or something and he will never meet them. My mind always convinces me that someone else will be better for him than I am. My current boyfriend is very affectionate and considerate, but I never get enough and I am doing the same thing to him. If he doesn't tell me he loves me every time we talk on the phone I get a terrible feeling in the pit of my stomach and I get angry, I call him back up and demand to know why he wants to break up with me. I want to have a normal relationship like other people have. And the funny thing, is when I DO feel loved, I can see what's happening so clearly. But then later that same day I fall into an irrational frenzy, imagining situations.