Caixa Postal

Tell me how can it happen
What did I do?
We were so happy
You left without telling me
Slamming the door

Another day walking through the streets
I remembered how happy we were
Almost everything was a reason to smile
You left and I don't know what I did to you

They ask about you
I don't know what to say
With nothing to say
I try to explain

I say: I've been there, knocked, called
Left a message in the PO box
I don't know, I haven't seen you anymore

How can someone make so much sense
And leave through a door without returning?
And disappear from my life at once
Without leaving any clue of where they are