why does love hurt so much

Love doesn't hurt, on the contrary, it is amazing! It is the absence of mutual love that hurts.

Love is a bond between two people that goes beyond logic and reason, one that overwhelms the mind and senses enough to do things that are aporiable. But when only one person out of these two have this emotion they might not realize that the other might not reciprocate and it is this naiveity that blinds them from the plain and simple truth that they might get hurt as if they were in a relationship that doesn't mean anything what so ever! When/if they do get hurt then they can't understand why this person, who apparently loved them, did what they did. The answer is quite simple: Either that other person doesn't reciprocate or they need reminding that what they are doing to those that they love the most is in fact hurting them! If they change their ways, at least enough to show that they desperately want to try, then they love you back. If they don't then they don't love you back.

Unfortunately the word love is used far too often or perhaps the bond associated with that word is perceived to be far stronger that it actually is.