Harry flinched for a second, before he let himself know it was ok. Ginny wouldn't hurt him. "You're not going anywhere.." he repeated after her.
But she was wrong about one thing. They may have all thought he didn't have anything to be scared of anymore, but who knew how his confidence would hold when faced against Voldemort again. Better not to think about that now.
His exhaustion was taking over slowly, but he knew if he fell asleep now, she would leave, or he'd wake up and this would have all been a dream. Facing Ginny once, apologizing and making a fool out of himself was hard enough but having to live this night again, would have been just has rough. She was back in his life and he didn't want it any other way.