My Italian is not perfect but here is a rough English translation:

"Only You in My Head"
 
Don’t go anywhere yet
At least let me explain before you decide
You’re not suffering alone
I would also like to simply disappear
Who knows what it is to die? (?)
 
Please listen to me
Losing you is not at option for us to discuss
 
Because in my head I only have you
As if you were the air, water
and the fire that is lit for you
There’s a reason for this crazy story
that filled my head with you
 
We have also faced certain contradictions,
it's been hard
Problems, not of guilt,
but of seeking to understand,
to complete what I know (?)
 
I won’t tell you that I didn't do anything stupid
But listen to me because...
 
In my head I only have you
As if you were the air, the water
and the fire that is lit for you
There’s a reason for this crazy story
that filled my head with you

Give me your hand, you’ll see
I’ll give it absolutely everything
We’ll try again, we’ll start over

There’s a reason for this love between the two of us
And you alone are the air, water
and the fire that is lit for you
There’s a reason for this crazy story
that has filled my head with you,
And in my heart I have no other but you.