I wake up and the first thing that I do is look if you wrote to me
Or: I wake up and the first thing that I do is check if you texted me
Last night I left you a message, but you didn't read it
I understand that you don't want to know about me anymore
Or: I understand that you do not want to hear from me anymore / you don't care about me
They say that I lost you, I lost you
And I can't endure another night without you
'Aguantar' is a verb meaning 'to bear', 'to put up with', 'to endure', 'to stand', 'to take', 'to tolerate'
Another night without you
It hurts so much another night without you
Another night without you
Another day that I wake up and in my bed you're not