[John whirls around and jabs a finger at Harry's chest, which slides neatly off to one side just before it can make contact. Like he's got a teflon bubble around him. He tried this time, and it still couldn't be done.]

You got into Petre's head, you jackass. [It's a struggle to keep his voice down, but he's at a nearly inaudible whisper out of necessity.] Made him think he had competition. All of a sudden he goes "if I can't have you no one can" psycho and this happens - I can't touch or be touched by anyone but him.

[And then a sidelong glare at the bookshelf, because this really is stupid.]

Any guys.