Jake Gyllenhaal is not one to kiss and tell. So, when the Southpaw star appeared on Howard Stern’s Sirius XM radio show Wednesday, he once again declined to discuss his short-lived romance with pop star Taylor Swift. One day earlier, when Gyllenhaal was promoting his movie on Good Morning America, the segment was introduced as Swift’s “Bad Blood” played—and Stern found it quite amusing. He asked, “Were you are of that?” 34-year-old Gyllenhaal said with a laugh, “No.