 Shake Shack Inc. SHAK, -2.25 and DoorDash Inc. DASH, -3.62 have launched a limited-time dating site, Eat Cute, that aims to bring together fans of the burger chains Buffalo Chicken Sandwich. Simply upload a selfie, tell us how spicy you like it, and let your passion rage fearlessly for Shake Shack on DoorDash, the announcement said. 