HE sent the rumour mill into overdrive earlier this year as he admitted he wasnt sure if he was still engaged to Mezhgan Hussainy. And now Simon Cowell has furthered the speculation about the state of his relationship by stepping out with a pretty brunette who looked remarkably similar to his make-up artist fiance. The X Factor mogul was spotted enjoying an evening out with the mystery woman at Miamis Casa Tua restaurant earlier this week. Cowell, 52, couldnt hide his delight as he left the eatery and headed home for the evening, smiling widely as he made his way to the waiting car. And his dinner partner also appeared in good spirits, grinning for photographers who spotted the pair arriving at the restaurant. Cowells dinner date comes as he and Mezhgan havent been seen together for nearly a month. DM