I personally don't believe in just on-line relationships. On-line relationships where the couple meets once and a while IRL? Yes, I think that can work, but strictly "computer" ones....
I have yet to see one relationship that works.
I am speaking from experience as well. I was extremely serious about a friend of mine from AR. We had been friends and talked everyday (phone and computer), and I really wanted to take the next step.
We made plans three times to meet and each time something "came up." It was really hard to let that hope go the last time something came up and I told him I couldn't do it anymore. Even though it's just "on-line" there are still real feelings. At least...for me there was. Dating IRL, I couldn't do it. Or if I did do it I always wondered about him. I broke off the romantic talk, etc though we are still wonderful friends and I love him very much.
I really agree with shayna and denuseri on this.
Time to find a new guy.