Never frown, even when you are sad, because you never know who is falling in love with your smile.
I want someone whos afraid of losing me 我希望找到一个担心失去我的人。
The last part is probably the Duwusiren have changed.睹物思人的后半句大概是物是人非。
我相信我能遇见比你更好的人,但现在你就挡在我面前,像从天顶倒挂的瀑布,三百六十度的震耳欲聋,除了你我什么都看不见。