But everyone is also selfless in some way and can sacrifice everything for his beloved without thinking of repayment, even though she has no feels to him even hates him.

每个人都有无私的一面，为了自己最爱的人可以为她付出一切，却不记回报，哪怕她对你毫无感觉甚至是讨厌，你还是会对她一如既往。