<p>From Frank Sinatra in the 1940s to Harry Styles in the 2020s, many of the biggest male stars in the world built their early careers on their romantic appeal to young women. The lovestruck teenager gazing at pictures of her idol in magazines or screaming in hordes at a concert is a stock character in the textbooks of fame. And yet no history book has, until now, told her story from the start.<br>Swoon revisits six defining moments in book, film...