As a man, I lived and loved a 'sociopath' with the exact behavior patterns and I totally agree with "iluvsociopaths' interpretation of this line of 'we could have had it all'. My family had it all but my wife chose her egoistic self over everything and lost all of what we created - children included.
Adele's song, even though sung from a woman's perspective speaks to me in the same voice and understanding. Her lyrics comfort me in believing I am not the only one having lost my heart to the wrong person.
Thanks Adele.