IN LOVE? Kate Winslet

NEW MAN IN KATE'S LIFE    Kate Winslet, who only a few months back split from her husband, Sam Mendes, is nowadays seen in the company of a young, hot British model, Louis Dowler.         The two, according to sources, are inseparable and have gone out on numerous dates together. The 34-year-old Oscar winner was introduced to Dowler - who is ten years younger than her estranged husband - by mutual freinds at a party. A source told an international daily."They get on really well. It's early days for them, but they enjoy each other's company. Louis has a good sense of humour and is a lovely guy. He loves to surf, is quite engaging and very down-to-earth. He's a good looking guy and gets lots of attention when he's out. He's not your typical model. Not at all big-headed."         Kate split from fiolm director Mendes in March and immediately after announcing their separation, fled t Mexico with their six-year-old son Joe, and her nine-year-old daughter Mia, from her previous marriage to producer Jim Threapleton.