Diane Keaton hasn’t been a big star since the 70s when she was a leading character the classics The Godfather and Looking for Mr. Goodbar. But in 2005, she hooked up with “Something’s Gotta Give” co-star Keanu Reeves despite a 19-year age difference. Diane even visited Keanu’s place on the regular and went to his Walk of Fame ceremony, Glamour magazine reports.