Was I shattered? Yes.
Was I myself any time soon after that? No.
But did I learn and moved on?
Yes, I accepted the fact that she wasn't going to be happy, even if she loved me. I accepted the fact that I loved her 'To dah moons and beyond' and let it go. She made me promise her to live on and find another and so I did. And well, the past is the past.
You have to accept it, learn from it, and use it as the plaster to help reshape your heart for the next time around.