Kate Hudson and Alex Rodriguez were spotted getting cozy last month at a restaurant in New York City, and now a source confirms they are dating. "It's somewhat serious," the source tells PEOPLE in its upcoming issue. "He introduced her to a bunch of his friends." For her part, Hudson followed Rodriguez on the road late last month to Dallas, when the Yankees played the Texas Rangers in a three-game series. The actress and son Ryder, 5 (dad is Chris Robinson), stayed at the same hotel as Rodriguez, and the couple "worked out together in the fitness center," says an...