There is unconditional love, like that between a parent and their child, God and his creation and there can also be unconditional love between a man and a woman. Thinking not of yourself and putting the other persons well being before your own, doing what is right for them. Loving them and expecting nothing in return. It is also possible for someone to love you unconditionally but that does not mean that they will remain by your side. If a person goes away it does not mean that they stop loving you, there could and often are many more reasons involved.