"Since that's the case, let's settle on this agreement. We have a three-year promise underground. After three years, if you can truly show me a different you, then I am willing to return to your side and spend my life with you again. If by that time you are still the same as now, aimless and unchanged, then when I leave again, I hope you won't make any excuses to stop me from leaving. As a man, you should have the courage to face the consequences. Once you make a promise, you must keep it. A promise is a promise, and the value of a promise is gold; I hope you can understand this!"
