我多麼愛你的心（You Don't Know）的詞曲都是由The Cardigans樂團所完成，以下是這首歌的詞：
英文詞：
You don't know what you do to me
You don't know what you mean to me
All the other guys, they don't do nothing for me
I don't want diamonds or flowers for Valentine's day
I just want you to want me
You don't have to say you love me
I already know it's true
I don't want diamonds or flowers for Valentine's day
If you don't ask, I don't want to hide
Cause I love you, I love you, I love you so much
And I don't know what I ever did without you
You don't have to say you love me
I already know it's true
中文詞：
你不知道你對我做了什麼
你不知道你對我意味著什麼
其它那些人對我都沒有意義
情人節我不要鑽石或者花 我只要你知道你心中有我
你不一定要說你愛我 我已深知此情真意濃
情人節我不要鑽石或者花 如果你不問起 我也不願隱瞞
因為愛你 愛你 愛你 我已深入骨髓 離了你我簡直不知如何是好
這首歌充滿了女性對於愛情的直白表達，坦率而熱烈。歌曲旋律優美，歌詞更是深情款款，讓人感動。