This Must Be Love Songtext

I hear that song and its playing in my head
To see her run, to see her hide
My hearts beating
And didn't I say that you should stay the night?
I like it best when you put up a fight
And I, I know that you are scared
And it, it just makes me smile
And when, when I see your tears
I know, I know this must be love
I hear that voice and it tells me when to smile