Those are tough questions. How old are you? I wonder if five years ago you were less mature then you are now or were looking for different things in a partner. It really doesnt matter how old you are five years is still enough to experience change- maybe from a less mature place of love to a more mature, realistic place? Did your past relationships go ok? Was there lots of fighting and drama in the old relationships? Sometimes that can happen and cloud our view when it comes to dating other people. I kind of look at it as the "will's" and the "Should 's".
-will I allow myself to be happy?
-will I be able to trust this person?
-should I date this person?
- will they make me happy?
-should I put time into this relationship?
Stuff like that.