Parable of the Porcupine.....

It was the coldest
  winter ever.  Many animals died because of the
  cold. The porcupines, realizing the situation, decided
  to group together. This way they covered and protected
  themselves; but the quills of each one wounded their closest
  companions even though they gave off heat to each other.
   After awhile, they decided to distance themselves one
  from the other and they began to die, alone and frozen.   

So they had to make a choice: 

Either accept the quills of
  their companions or disappear from the Earth. Wisely,
  they decided to go back to being together. This way they
  learned to live with the little wounds that were caused by the
  close relationship with their companion, but the most
  important part of it, was the heat that came from the others.
   This way they were able to survive.  

Moral of the story:

The best relationship is not the one that brings
  perfect people together, but the best is when each 

individual learns to live with the imperfections of others 

and can admire the other person's good qualities.