We set our own limits on love. Some of us bind our hearts like Chinese women bind their feet. The binding is painful at first but eventually you get used to it and the pain goes away. The saddest part of all is that by binding yourself to the choices you make, you forget that there was ever another way to live.
All the things that people do in order to show that they don't need anybody... meanwhile, all they really want to do is say, "Please keep me." We all want to be kept. The problem is we are too afraid to let anyone know about it. What are these fragile things in our hearts that have so much fear of being broken?
If the idea of loving those whom you have been taught to recognize as your enemies is too overwhelming, consider more deeply the observation that we are all much more alike than we are unalike.