Well, it happened to me... :)
I always thought it was simply impossible for two strangers to fall in love just like that, I was always laughing about my girlfriends stories - until one day it happened to me. Unfortunately things didn't work out and it broke my heart badly (I almost ended up in some mental health facility as I started hallucinating)... :)
The way I see it now: it's a great gift and it's not happening to everyone - maybe the more sceptical you are , the most likely it will strike you... :)