I think there is a stage 0 (a bit like the START square on a board game): I am ready, but not desperate and will enjoy being single whilst I still am, but if something comes up I won’t say no.
I never got past that stage. I enjoyed my time being single but never really got fed up of it to the point of despair, and when I got engaged I was not upset to leave it behind. I don’t remember going through any of the other stages…