Hilary Duff [1] and Mike Comrie got everyone talking on Friday night when they held hands while leaving the Casamigos Halloween party [2] in West Hollywood. The pair, who announced their split back in January, looked very much together [3] as they made their way through the crowd with Hilary dressed as a fairy and Mike dressed as an Iron Man-suit-less Tony Stark. While the couple have stated that they are separated, they have remained close in the months following their split. Hilary, Mike, and their 2-year-old son, Luca, went on vacation together in Hawaii [4] in February, and they have been sending mixed messages about the status of their romance. Hilary has been open about the fact that her latest single, "All About You," [5] is about her husband of four years and includes cryptic lines like "Maybe we're not meant to be together, or maybe we are."