The confusion began after Alexandra Grant, 46, was spotted holding hands with Reeves, 55, at the LACMA Art + Film Gala this past weekend.With her gray hair, the artist and philanthropist was mistaken by some on social media for another beautiful, silver-haired woman in Hollywood: 74-year-old actress Helen Mirren."Y'all I'm not gonna lie, I didn't have my glasses on the first time I saw it today and I thought Keanu Reeves was dating Helen Mirren," one person tweeted.The mix-up sparked speculation about whether Reeves and Grant, who have been friends for a decade, are indeed a couple.Mirren talked about the case of mistaken identity to "Entertainment Tonight" Wednesday while on the red carpet for the premiere of her new movie "The Good Liar" in New York City. "I saw that," Mirren said. "That was very flattering on me, you know, because she's obviously lovely."Mirren has been happily married Read More – Source