来告诉我这是什么歌

that's why，也有名字是that's why you go away
具体谁唱的不清楚。
听过之后再给评价。
歌词：
Baby want you tell me why
there is sadness in your eyes
I don't wanna say goodbye to you
Love is one big illusion
I should try to forget
But there is something left in my head

You're the one who set it up
Now you're the one to make it stop
I'm the one who's feeling lost right now
Now you want me to forget
every little thing you said
But there is something left in my head

I won't forget the way you're kissing
The feelings so strong were lasting for so long
But I'm not the man your heart is missing
That's why you go away I know

You were never satisfied no matter how I tried
Now you wanna say goodbye to me
Love is one big illusion I should try to forget
But there is something left in my head

那个是电影段背山的插曲拉~~
也叫做i don