While they walked the red carpet separately at the Critics’ Choice Awards, they walked the Golden Globes red carpet together and also attended an after-party, where they posed for photos in each other’s arms.
Last week, they were photographed together at the BAFTA Los Angeles Tea Party. They also left together, according to reports.
Harbour was previously engaged to Strangers With Candy actress Maria Thayer, who starred with him in the 2009 film State of Play, and also previously dated Julia Stiles, who starred with him in the 2012 movie Between Us. He and Sudol have never acted together.