Unconditional love really exists in each of us. It is part of our deep inner being. It is not so much an active emotion as a state of being. It's not 'I love you' for this or that reason, not 'I love you if you love me.' It's love for no reason, love without an object.
There's much more in any given moment than we usually perceive, and that we ourselves are much more than we usually perceive. When you know that, part of you can stand outside the drama of your life.