Tattle tale

CofU came to me and said that D had said a bad word, F***. Not rising to the bait I calmly said it was a bad word and that he must have been provoked to use it. I later asked D for the full story, he told me that CofU walking across the lounge had inadvertently stepped against a power cord that was supplying D's laptop, pulling it out. D lost the last 1/2 hour's work. no wonder he was a bit upset. Why did CofU tell me just part of the story, to make trouble between D and myself? He also infallibly tells me if J is watching TV and using a computer at the same time, something I dislike.