So I did this last night: http://groupthink.jezebel.com/im-not-afraid-… and he actually responded today and apologized.

Transcript:

Him: "You're right, and I'm sorry. I have no excuse, you do deserve better"

Me: "I know I do. Kind of bummed because I enjoyed being with you"

Him: "Same, but too much longer and I would have gone into more a boyfriend mode than you were looking for anyway."

See, this I understand. I'm upfront about not wanting a serious relationship. I'm glad he proved to be not a total ass and now I can move on with no hard feelings.