"Who'd Have Known" Lily Allen'ın ikinci stüdyo albümü "It's Not Me, It's You"dan çıkacak olan 5. tekli. Greg Kurstin tarafından, Take That'in "Shine" şarkısının müziği yapılırken, ortaya çıkan şarkı 23 Kasım 2009'da İngiltere'de 4. tekli olarak piyasaya çıkarılacak. Şarkı hakkındaki eleştiriler çok olumlu yönde, özellikle Lily'nin içi ısıtan vokali övülmekte. Müzik videosunda ise Lily Allen, Elton John'a takmış bir fanı canlandırmakta.

Who'd Have Known Lyrics 
(Şarkı Sözü)

It's 5 o'clock in the morning
Conversation got boring
You said you're going to bed soon
So I snuck off to your bedroom
And I thought I'd just wait there
Til I heard you come up the stairs
I pretended I was sleeping
And I was hoping you would creep in
With me

You put your arm around my shoulder
It was as if the room got colder
We moved closer in together
And started talking bout the weather
Said tomorrow would be fun
We can watch A Place In The Sun
I didn't know where this was going
When you kissed me

Are you mine?
Are you mine?
Cause I stay here all the time
Watching telly, drinking wine
Who'da known, who'da known
When you flash up on my phone
I'd no longer feel alone
No longer feel alone

I haven't left here for days now
And I'm becoming amazed how
You're quite affectionate in public
In fact, your friend said it made her feel sick
And even though it's moving forward
There's just the right amount of awkward
And today you accidentally
Called me baby

Are you mine?
Are you mine?
Cause I stay here all the time
Watching telly, drinking wine
Who'da known, who'da known
When you flash up on my phone
I'd no longer feel alone

Let's just stay
Let's just stay
I wanna lie in bed all day
We'll be laughing all the way
Told your friends
They all know
We exist but we're taking it slow
Now let's just see how we go
Now let's see how we go

Let's just stay
Let's just stay
I wanna lie in bed all day
We'll be laughing all the way
Told your friends
They all know
We exist but we're taking it slow
Now let's just see how we go
Now let's see how we go 

Haber: R. Fikret Karabulut