Unconditional love is the love of the Buddha, of Jesus, or of the highly developed monks and nuns. They just sacrifice themselves, or they do anything just for others'sake. Even do things that they don't like, or hardship, work hard, or enduring difficult situations, it's for other people. That's unconditional love. But the unconditional love is, you just love everybody. You do everything for everybody without that person even knowing you. Wiithout that person even being yours or do anything back to you. That's the love of the Buddha. It's a different level.