I recently talked to a guy that bed someone while his ex's bra was still below the pillow.
Sorry for the gross image.
But I remembered that with that message. "Kitty, I couldn't care less about how you have felt all this time or what I did in our relation. All I know is I-the only important human in the Universe- can't spend A MINUTE by myself, and need you to keep worrying about me".
IMHO its better if you don't answer anything... hard to resist, I know, but after seeing how sad and angry you have felt about this guy Kitty he doesn't deserve anything from a wonderful woman like you.