Why can't I find a relationship that will last?

Dear Cary,

I believe that I have lost my ability to trust my judgments on relationships. However, I still believe in love, and I have not given up all hope.

Here is the situation.

I am 33 and single yet again after another failed relationship. I am college educated, I work a high-pressure job, have quite a large group of close friends, and have some hobbies that I am pretty devoted to. So I… » Full Story on Salon.com