If a boy tells a girl the lyrics of a poem he wrote for you, what does he want to say?

When a person falls in love with another person, she/he will be willing to do anything for him, and will never care about the sacrifice and how much. Even if he lost time, lost his youth, lost his studies and even lost his life, it doesn't matter. As long as he/she can be with the person he/she loves, all the sacrifices are worth it. I understand this eagerness, but people often forget that in the country of love, there is never such a thing as no pains, no gains. If a person loves you, he/she will love you even if you do nothing. If he/she doesn't love you, even if you do everything and give everything, he/she may not love you more. Maybe he/she will be moved, but who can move him/her for a lifetime? People can't keep paying, and one day they will feel very tired. What can we do if he/she stops touching us? Love born for moving is the most unreliable, because we can never tell whether it is emotion or love, and we can never know whether he/she loves himself/herself or does something for him/her. I have always believed a saying in China's proverb.