It’s time for some double trouble. No, we’re not talking about the Olson twins. We’re talking about Tegan and Sara, the pair of indie Canadian twins who rocked with hits like “Walking with a Ghost” and “Back in Your Head.” Fans are gearing up for the duo’s forthcoming album, Heartthrob. It looks like the two will be diving headfirst into the pool of past loves, former relationships and gut-wrenching emotions that inspire the most memorable tracks.You can get a preview of Heartthrob here with “Now I’m All Messed Up,” a powerful synth-pop ballad about heartbreak and all the complicated baggage that comes with it. Heartthrob comes out on January 29^th.