Snape:
I see you there
Wind blows your hair
As you swing
And I'm ten years old
And you're beautiful
As you swing

Lily:
You tell me
I'm a witch
And I fly
Off the swing
My sister's scared
But I am prepared

Both:
To try to make magic
With you
My magical childhood friend
Somebody that I can depend on
To help me
Depend on to hold me
And I think I would die
Without you

Snape:
I see you there
Green eyes, auburn hair
At Hogwarts
I'm fifteen years old
And you're beautiful
At Hogwarts

Lily:
Nobody likes you
But I will stay [bad word] At Hogwarts
James taunts and jeers
But I keep you near
And try to make magic

Both:
With you
My magical childhood friend
Somebody that I can depend on
To help me
Depend on to hold me
And I think I would

Snape:
Die without you
I'm sorry!

Lily:
Save your breath!

Snape:
I didn't mean to call you

Both:
Mudblood

Lily:
You didn't mean to call me Mudblood

Snape:
It just sort of

Both:
Slipped out

Lily:
Didn't it? Well [bad word]  get out!

Snape:
You don't mean that!

Lily:
Don't I? 
I've made excuses for you for years!
But now I know you've made your choice
And you have chosen evil
"You just can't wait to join You-Know-Who, can you?"

Snape:
I'm all alone
Cannot atone
For all I've done
So I serve You-Know-Who
Evil through and through
Cannot be undone
I'm twenty years old
And you're beautiful
Though you're not here

This prophecy predicts
That he will kill you, James and Harry
He couldn't keep you safe, though
Dumbledore
Couldn't keep you safe
So you were killed
And I vowed I'd keep your son from harm
Working as a spy for Dumbledore
Working as a spy for sixteen years
Wish that I had died then
In your stead

And then one day I finally learned the [bad word] Everything I've done for you—for Harry
Had been done for naught

As hard I tried
Harry had to die
Always
And I'm thirty-eight years old
And you're beautiful
Always

Always her
My magical childhood friend
Somebody that she could depend on
To help her
Depend on to hold her
And I know I will die
Without her

Lily:
You did your best [bad word] 
Snape:
And I will love her

Lily:
And I forgive you [bad word] 
Both:
Always!!