If you purchase an independently reviewed product or service through a link on our website, Rolling Stone may receive an affiliate commission. It’s high noon on a classic sunny LA day, but Austin Butler is casting a moody shadow behind the balcony of the El Rey Theatre in Miracle Mile. The lights are dimmed and stage curtains drawn in the historic art deco venue, with no act booked to perform, save for the 34-year-old actor, who’s been dutifully fielding questions from journalists all morning about his new Yves Saint Laurent fragrance campaign. Dressed in a tight black T-shirt, black jeans and boots, Butler is mid-way through his latest interview when his phone suddenly begins to ring. “Oh, it’s my gratitude alarm,” he says, apologetically. “I have one set every two hours, and then I need to name three things I’m grateful for.” What is he grateful for today? “I’m grateful to meet you,” he says in a bluesy bass drawl, while flashing a sly movie star smile that leaves this writer flushed.…