"I see you checked me out on ...name of dating website.
#holyshitski I said to myself. I immediately went onto the site and blocked him from contacting me or seeing my profile. In the process, I noticed that the dating website had assessed our compatibility as 100%. His description of what he was looking for was a description of me.
Happened to a bud of mine as he left a relationship of 6 years. After lots of beer and a little talk, we figured it's because they've been together day in and day our for so long that that's all he really knew in a woman. Given time apart, time to find himself, he'd find maybe he had different needs.
The same is probably true for you.