Well I would say that I go after women who are looking for a relationship but often strike out, where as the ones looking to hook up, I do good with.
For example one women who was serious about a relationship, I went out with, and I had a really good time with her and thought she was really cool. I was making her laugh a lot which is a good thing, but then about half an hour before the date ended, something happened, and her demeanor changed and she started to lose interest.
Not sure what it was but there was a change in her mood for sure. Things like that, I keep screwing up on.