Arctic Monkeys leave before the lights come on

Well this is a good idea,
You wouldn't do it if it wasn't,
You wouldn't do it if it wasn't one.
Well my friend fancies you,
Oh what a way to begin it all,
You said there're always exciting words to hear
And you woke up together not quite realizing how,
Oh but you're stretching and yawning,
It's always hard in the morning,
And I suppose that's the price she pay,
Well, oh it isn't what it was,
She's thinking he looks different today,
And now there's nothing left to guess now,
You left before the lights came on,
Because you didn't want to ruin,
What it was that was brewing,
Before they absolutely had turn,
But how can you wake up,
With someone you don't love?
And not feel slightly fazed by it,
Oh, he had a struggle,
And he woke up together not quite realising how,
Oh but he's stretching and yawning,
It's always hard in the morning,
And I suppose that's the price she pay,
Well, oh it isn't what it was,
She's thinking he looks different today,
And now there's nothing left to guess now,
Quick, let's leave, before the lights come on,
'Cos then you don't have to see,
'Cos then you don't have to see,
What you've done,
Quick, let's leave, before the lights come on,
'Cos then you don't have to see,
'Cos then you don't have to see,
What you've done,
I'll walk you up, what time's the bus come?
I'll walk you up, what time's the bus come?
I'll walk you up, what time's the bus come?
I'll walk you up, what time's the bus come?