Nick Jonas left a flirty comment on Priyanka Chopra's Instagram on Sunday, after she shared a fun snap of herself grabbing burgers with a couple of girlfriends. The yummy food and good company helped capture Priyanka's infectious happiness in the photo, and her reported beau took obvious notice. "That smile," Nick wrote, alongside a red heart emoji. The pair has fueled romance speculation since spending Memorial Day weekend together, getting cozy aboard a yacht with fellow celebs