Love has always been rubbish—after an unrequited love for 10 years that's the conclusion he reached. He has always given his best effort for his love to grow, but it has always been crushed. The rubbish that broke his heart to the verge of crying, because he has relied to much on it... "Unilateral is this enormous feeling, always with this painful desire." And that's what Ao thinks. Perhaps he was just imagining it...?