The last time I checked, I was whole.
At first I didn't feel Roxas leave me. It just happened. I was more concerned about Kairi than worrying that I had a missing piece.
Yet I did.
And somehow I managed to move on from that, destroying 'Ansem' and all the members of Castle Oblivion. Then Naminé told me that I wasn't whole.
Incomplete.
Did one Nobody really matter? I survived long enough without him to be stronger than Ansem, Marluxia, Larxene, and Vexen.
He completed me.
In a non-gay sort of way it made sense. He had some of my memories, the important ones.
Of her.
That's who I fought for. Her. The one who originally wanted to leave Riku behind and go the one who didn't want me to change.
Kairi.
I'd already died for her. So what was left? I could live for her too. If I chose to. I do.
She is the piece that's missing.
I want to be with her. To make her, in a sense my Nobody. The piece that I couldn't live without. So I will give her this ring. I will marry her. Love her. Cherish her. And as she completes me, I shall complete her