I still think this is a turnaround experienced by everyone of a certain cynical bent who has had so many relationships in which we perceive ourselves as giving so much and the other person as not giving as much and demanding even more. The cynicism may not have manifested prior to that situation (or it may have, as I was told I was cynical even as a baby), but I do think the inclination toward it has to be there in order for this conclusion to be reached.