“How come you’re here?”
Apparently Ron had hoped that this point would come up later, if at all.
“Well, I’ve — you know — I’ve come back. If —” He cleared his throat. “You know. You still want me.”
There was a pause, in which the subject of Ron’s departure seemed to rise like a wall between them. Yet he was here. He had returned. He had just saved Harry’s life.
Ron looked down at his hands. He seemed momentarily surprised to see the things he was holding.
“Oh yeah, I got it out,” he said, rather unnecessarily, holding up the sword for Harry’s inspection.
Harry Potter and the Deathly Hallows – J.K. Rowling