《Complicated》的詞曲作者是艾薇兒·拉維尼，其歌詞如下：
I'm just complicated, I'm not tryin' to be complicated
我如此簡單，不試圖變得複雜
You're complicated, trying to decode what you really mean to me
你如此複雜，試圖解讀你對我真正的意味
It's not complicated, to fall in love with you
愛上你，真的不複雜
My life is complicated, with all your kisses and I want more
我的生活如此複雜，你的親吻我渴望更多
When you look at me, you make me want to learn
當你看著我，讓我渴望學習
Now, am I complicit? Am I making it worse?
現在，我是共犯嗎？讓事情變得更糟？
Or is it just the way we do things around here?
還是這只是我們這裡做事的方式？
I'm just complicated, I'm not tryna be complicated
我如此簡單，不試圖變得複雜
You're complicated, trying to figure out what I really mean to you
你如此複雜，試圖找出我對你真正的意味
I'm just complicated, I'm not tryna be complicated
我如此簡單，不試圖變得複雜
And now you're asking me to show you, how it is? Oh, no, no, no, no, no...
現在你問我展示給你看，怎樣才是對的？喔，不，不，不，不，不...
It's not complicated, with you by my side and all that we could be... yeah...
愛上你，有你在我身邊，我們能做的一切...耶...
這首歌的詞語多與感情生活有關，描述了愛情中的困惑和複雜感。整首歌的語境和情感都十分真實和深入人心。