Social media user and journalist Kelsey Weekman has unearthed Affleck's secret Instagram account, reports mirror.co.uk."I found ben affleck's finsta," she wrote along with a screenshot of the account.The account is run by a person called 'Ben' and comes with the handle name -- @positiveattitudehunting, which seems to be a nod to his 1997 film "Good Will Hunting".i found ben affleck's finsta — kelsey weekman (@kelsaywhat) The account only has three followers, including De Armas and Garner.