Every human being is broken in some ways. We all seek to healing. And love can be a powerful healing force at multiple levels - psychological, neurological and sociological. The problem is that when two broken people try to use each other's love to heal their wounds, it can create more brokenness - because two different people may need two different ways of feeling loved by the other, to feel healed. But the other may not be able to provide that particular way of being loved. This can create a lot of resentment in relationships.