George Clooney split from Lisa Snowdon because she never cooked him a roast dinner.The British model - who twice dated the Hollywood superstar - believes her failure to prepare a traditional English meal for George was the downfall in their relationship.She joked: "I never made George a roast. It's the way to a man's heart, isn't it?! Dammit! I knew I messed up somewhere!"Lisa, who is currently presenting TV show 'Britain's Next Top Model', insists she is happy George has found love again, this time with former cocktail waitress Sarah Larson.She added to Britain's OK! magazine: "I don't get any pangs of jealousy when I see pictures of him with Sarah. I really, hand on heart, don't. We both made the decision to split up so it wasn't like one of us was jilted. I'm just really happy for him and he seems to be very happy with his girlfriend."