Therapy is a great start! Don't give up on it! You are doing the write thing!
Sounds to me that you have a fear of loss.
Have you ever experienced loss before? Like a family member or anything?
Keep us in touch, we are here to help. I'd be interested in what your therapist is saying.
You can overcome this fear. =)
God Bless you, and good luck.
Fear of losing someone close to you can really take its toll on any relationship. How long have you been going to therapy? It sometimes can take a little while to see progress, but just keep on going...it can only help. While I am not in your situation, I was really afraid of death for awhile, but realized that it will someday and I have to cherish every moment I have. I lost my self identity, became depressed, and was so afraid to die that I would not live...I know it may sound a little cliche, but it is true. Our fears can often overcome our will in some situations.
But I believe you are doing the right thing. Therapy can be a long and arduous process; sometimes you don't realize your making progress when you actually are. Please keep your questions and concerns coming. Also, welcome to this forum; you will find a community here that listens, cares, and can really relate to what you are going through. Please keep us posted.