[No he couldn't wield it, but he had seen how powerless she was without it. Without it she would not be able to act as if she were better, as if he were nothing and unable to do anything. She would have a use for him then, a need for him.]

Then I'll destroy, just as I had planned on before.

[Granted he would be unable to eliminate all of space and time with it this time. But he would find a way to destroy the crystal.]

My desires from here forward will be my own. And you will see just what I can achieve without him, and without you. Eventually you will come to see me in a different way, you will love me.