I guess I am a bit different - I may know if I am definitely not attracted, but if I am not turned off, it still takes me awhile to determine if I am in fact attracted. The reason being is because what attracts me is the person's mind, and that takes a little while to figure out. (Oh sure I notice whether someone is physically attractive, but it is all artwork to me. I've seen some really pretty people have very ugly minds.)
In any case your recent change in approach may have something to do with the individual(s) themselves; maybe you are still getting getting reacquainted with the dating process; or perhaps something about you has changed since you last dated - maybe the question isn't as black and white as it used to be.