Grey's Anatomy star Kate Walsh is paying tribute to her former onscreen love interest, Eric Dane, in the wake of his death. Posting via her Instagram on Friday, February 20, Walsh honored her costar after he died on Thursday at age 53 following a battle with ALS. "I'm at a loss for words to try to express the sadness around Eric's passing," Walsh, 58, wrote alongside a carousel of photos that featured Dane, herself and fellow Grey's cast members.