I tell you something best friend ...
In my experiences, often the most open people are the most genuine.
It is the nice ones that you have to watchout for. They are nice in such a way just to get something from you.
This is called "Projection". It is how you think, so you assume everybody else thinks the same way, but are better at it since they got further ahead in life than you did.
Continual projection is actually one of the flags for psych disorders related to everything from narcissism to depression to psychosis.