Shen Xue and Zhao Hongbo were sure to remember the Valentine's Day of 2010.The Chinese married couple broke their own world record with a mesmerizing performance to open pairs competition at the Winter Olympics on Sunday, and it took until the very last pair – about three hours later – for anyone to come close to topping it. With a score of 76.66, the pair lead two-time world champions Aliona Savchenko and Robin Szolkowy of Germany by just .70 points.