1.) Because she can't really love us back.
2.) Because when she is safe, loved, her heart and mind soon wander to others.
3.) Because she needs far more than she can give.
4.) Because love for he is about being desired by many others.
5.) Because she'll show more compassion to an acquaintance than she will her "lover"
6.) Because even if you love her, and she loves you, she'll remind you in a ...