Jonah Hill is smitten! The 37-year-old actor confirmed his relationship with girlfriend Sarah Brady by going Instagram official on Thursday.«Grateful for you,» Hill captioned a photo of the pair out to eat at a restaurant. He also added a red heart emoji, two emoji faces with hearts, and tagged Brady.A post shared by Jonah Hill (@jonahhill)Brady, meanwhile, shared a post of her own with multiple pictures of her and Hill.