Tom Holland and Zendaya in New York in October.XNY/Star Max/GC Images/Getty ImagesZendaya wore a ring to the Golden Globes, sparking rumors that she's engaged to Tom Holland.Zendaya and Holland are known for keeping most of their relationship details private.PR experts said the ring could be interpreted as a nod to an engagement without needing a statement.Zendaya wore a ring on her left ring finger to the Golden Globes on Sunday — reigniting theories that she and Tom Holland are engaged.Two branding PR experts told Business Insider that this approach could generate more attention than a simple statement.Holland met Zendaya in 2016 when she auditioned for 2017's "Spider-Man: Homecoming," in which he played Spider-Man.