Lyrics:

It's someone else
I've known it all the time
Known that you're not mine
And will never be
It's someone else
I saw you out last night
Holding him so tight
And it's someone else
No, I really can't hate him
For what's happening to me
Will happen to him -
That's a certainty
And he'll learn
There's always someone else
Like I learned myself
Always someone else
Always someone else