应该是 How Did I Fall In Love With You 吧 歌手：Backstreet Boys 专辑：Black And Blue Remember when we never needed each other The best of friends like Sister and Brother We understood, we'd never be, Alone Those days are gone, and I want so much The night is long and I need your touch Don't know what to say I never meant to feel this way Don't want to be Alone tonight What can I do, to make it right Falling so hard so fast this time What did I say, what did you do? How did I fall in love with you? I hear your voice And I start to tremble Brings back the child that, I resemble I cannot pretend, that we can still be friends Oh I want to say this right And it has to be tonight Just need you to know, oh yeah I don't want to live this life I don't want to say goodbye With you I wanna spend The rest of my life Everything's changed, we never knew How did I fall in love with you?