Hmm..can't comment much since I don't know your age, but anyway,
since your relationships started at 16, I suppose it's fair to say
most of those guys who courted you aren't really the mature ones
who have thought about settling down? Moreover, the fact that you
did not take the initiative in all 4 relationships could indicate
the process of courting you was perhaps more of a challenge to
those guys than actually having you as their gf... 
