《I Don't Matter》的歌詞如下：
女：
I don't matter
Baby, you don't even care
You're so into her
And I don't even warrant a thought
男：
I don't know what I'm doing wrong
I don't know what I'm doing wrong
But I know I can't make it alone
女：
And I don't matter
Cause you don't even want me
And I don't even warrant a thought
When you're with her, it's a whole other world
男：
I'm trying to get over you
But every time I try to let go
You come back and remind me of what we had before
Now it's just another reason for me to say goodbye
女：
You make me feel like I don't belong
But baby, that's the price you have to pay
For choosing her over me
You were my everything, now you're letting me go
男：
Now it's just another memory to ignore
When I look into your eyes, they're so far from what they used to be
Now it's time for me to walk away, say goodbye
I don't matter, it doesn't matter to me
男：
It doesn't matter what I do or say
I still feel the same about you today
You say you want to move on, but your heart won't let you go
And now I know, it doesn't matter what I feel or show
女：
Cause baby, it doesn't matter to you
You want to be with her, that's what you want to do
So I'll let you both just fade into the distance and see how you feel when it's all said and done
I don't matter, it doesn't matter anymore
男：
I wish you all the best with her (wish you all the best)
But right now, I need some space (need some space)
I won't be coming back, it's time for me to face the facts (time for me to face the facts)
It doesn't matter what you do or say (it doesn't matter)
You can't make me feel something that I don't feel today (don't feel today)