Below is one of my favorite lines written by one of my friends - Sakshi Kukreja !!
"Before you can grow up, you must fall in love three times.
 Once, you must fall in love with your best friend, ruining your 
friendship forever. This will teach you who your true friends are, and 
the fine line between friendship and more....
 Once you must 
fall in love with someone you believe is perfect. You will learn that no
 one is perfect, and that you should never be treated as anything less 
than you deserve....
 And once, you must fall in love with 
someone that is exactly like you. This will teach you about who you are,
 and who you want to be...
 And when you’re through with all 
that, you learn that the people who care about you the most are the ones
 that you hurt, and the ones that hurt you are the ones that needed you 
the most.
But most of all, you learn that love is only a 
concept and is not something that can be defined, it is different to 
each and every person on this earth, knowing that everyone wants to be 
loved."
This doesn't end here. So, lets add more to it.
      
They say a heart break is necessary to understand the sudden transformation from a happy to a suffering person and to be happy again. Also, although the above lines say to fall in love thrice- but even if that happens once and follows every criteria explained- you learn a lot even then.
Yes, it's true that love is only a concept. Some express, some shy away, some care, some fight, some let it go, some care to hold on. But, the one I liked is hoping for other person's well-being even if he/she is not the one for you. (Probably, it's the Vampire Diaries/Bollywood masala which brought this one up- but, again some believes are still difficult to shatter). Nevertheless, love has another concept - which says it's selfless.
But, here comes my explanation which says it's not selfless.You are happy in somebody's happiness as it makes you happy. So, finally if it was all for my happiness, how is it selfless. Perhaps, everyone longs for love despite the fact only a few understand the depth.
Anyways, I really loved your lines SAKSHI - in case you are reading this one.