So, the other night I heard from the sister of one of my mates, that a guy who I would consider an 'aquaintance' at best (i know him from school, and run into him from time to time through mutual friends), has been telling people that I've asked him to be best man at my wedding, and seems to have constructed a bit of a fantasy life in which we're best mates and shit...

I'm creeped out by this.