《Confession》的日文歌詞為：
あぁ 戀愛がください
戀をしてたって
知らないうちに
ねぇ つかれてしまう
あぁ そんなんじゃ
なにもできない
どうすればいいの?
※あなたの橫顏を
ただ見つめてるだけで
胸が苦しくなるの
どうすればいいの?
迷わないで 迷わないで※
あぁ もっと もっと 愛してたい
あぁ もっと もっと 抱きしめたい
あぁ あぁ あぁ
ただそばにいて
あなたの夢を見させて
あなたの指先を
ただ觸れてただけで
涙がこみ上げる
どうすればいいの?
こわがりかける
こわがしちまうけど
もう戻らない
あぁ もっと もっと 愛してたい
あぁ もっと もっと 抱きしめたい
あぁ あぁ あぁ※
Repeat※ ×2
韓語歌詞為：
(男)不要害怕不要猶豫不要逃避不要退縮
(女)我向你坦白我的真心話向你坦白我的真心話
(男)你的微笑你的眼神你的擁抱你的愛撫讓我沉醉其中
(女)我想要你靠近我更加靠近我更加靠近我更加靠近我接近我
(男)我的心一直在跳動無法控制它每一次都想和你在一起永不分離
(女)我要讓你知道我愛你比你愛我還要多我要讓你知道我要讓你知道我愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你愛你我愛你我愛你我愛你我愛你我愛你我愛你我愛你我愛你我愛你我愛你我愛你我要讓你知道我離不開你離不開你離不開你離不開你離不開你離不開你離不開你離不開你離不開你離不開你離不開你離不開你離不開你)
英文歌詞為：
(man) Don't be afraid, don't hesitate, don't run away.
(woman) I confess to you my true feelings, confess to you my true feelings.
(man) Your smiles, your eyes, your hugs, and your touch make me feel in love.
(woman) I want you to come closer to me, closer, closer, closer. I want you to know that I love you more than you love me. I want you to know that I love you, love you, love you, love you, love you...! (repeat part of woman) (man) I'm going to be with you forever. (woman) I'm not going anywhere. I can't imagine living without you. (man) My heart is beating faster and faster with every passing moment. I want to be with you and never let go. (woman) Let me in, let me in, let me in...! Don't let go of my hand. (man) I won't let go of your hand. (woman) You're the one I want to be with. You're the one I love. You're the one who makes me feel alive. (man) I'll never let you go. (repeat part of man and woman) (man) I love you. (woman) I love you too. (repeat part of woman) (man and woman) I love you forever. Forever and ever...! Forever and ever...! Forever and ever...! Forever and ever...! Forever and ever...! Forever and ever...! Forever and ever...! Forever and ever...! Forever and ever...! Forever and ever...! Forever and ever...! Forever!