Harry potter Q?

maybe he overheard some others talking about meeting the trio for the DA meet so he was curious....so then he attended out of curiousity and snuck out...as everyone else had said. :P its obvious people would be talking about it....or maybe he overhead others who were to attend talking about how they thought harry was gonna talk about cedric and what happened the night he died and where they are to meet the trio.....once again, curiousity and big ears and sneakiness XD...but im only guessing :)