If you want to be cynical about everyone and play
caution, then how would you ever allow yourself the condition of
having someone decent for your pursue?
It is like even if Love wants to give you a chance, you don't
really want to work on them.
In this case, the best scenario would be to celibate and be a monk
forever because I tell you, you will always meet
disappointing people.
The catch is not about the disappointing people you meet; it is
about the one person out of the ten.
Our love life, is not always born out of a movie-style plot where
you could be extremely passive and Love force it upon you as if it
owns you one. Sad to say, most of us don't have it that way.
If you want Love, you got to evolve before you could attract one
and work towards it. 
Cheers