I heard it over the radio one time and thought, "Hey, it sounds like CloudxAerith".
So here it is:

Ghost of you


Summer's ended and without a trace
Time goes by - while you remain
Funny how I thougt I walked on through
With my heart in one
Chorus:

Why do I still cry for you
Dying to get close to you
Why do I still fear to face
The ghost of you

How I tried to get you off my mind
But you return - all the time
I believed I could just let you go
Like the fool I am

Chorus:

Why do I still cry for you
Dying to get close to you
Oh baby why do I still fear to face
The ghost of you

Release:

I've been trying to release you
To get my feet back on the ground
Still I need my hope to hold on to
Even if I know I should back away
It's just a part of me that I can't erase

Chorus:

Why do I still cry for you
Dying to get close to you
Why do I still fear to face
The ghost of you

Outro:

Baby, baby why
Anyway I try I'm still reminded
[The ghost of you]
Anywhere I go I keep colliding with
[The ghost of you]
I've given up I just can't fight it
[The ghost of you]

Everytime I look away I see
The ghost of you

Wow, it's so Cloud... who sings it?

What's that "outro"? It sounds portuguese to me, but it can't be...o_O

An "outro"... I don't know of such a word either XD
I just copied and pasted the lyrics here...
But I think "outro" would be the lines/part of the song before you exit or end the song. ^_^'