I think in a way it was a nice gesture to help you move on by meeting someone new through a dating site. I see nothing to be ashamed about being on a dating site as millions of busy people do it for some reason or another, mostly just not being able to meet anyone in real life. After all, no one has "available" written on their forehead. Maybe he was also upset because you blocked him.
LOL. The funny thing is I did block him in the beginning to help me move on from him. It's barely been three months since we broke up. I don't care if he does move on. The guy was a liar, and used me up. He was the one claiming that if we broke up he wouldn't be looking to get into a relationship not for a long time. And look what he's doing. But it really doesn't matter anymore since I am no longer with him. I am just saying he wasn't as "in love" with me as he claimed to be. Any way He blocked me. I did block him in the beginning, but it was just to help me move on and not constantly check out his facebook profile. Which surprisingly enough I moved on a lot faster than I thought I would. It was so hard for me to break up with him, but I did it.
I never thought that I would ever feel this way but I am happy that I was strong enough to end that unhealthy relationship and I am truly happy being single. I don't expect to be in another relationship not for a long time. I'm enjoying my me time.