“ Lies ,” Bryan’s duet with Lana Del Rey , does not. It’s a song about the self-doubt that inevitably creeps into the most stable relationships, the way you wonder if the euphoria or contentment you feel in a marriage is matched. They share the situation: Del Rey recently celebrated her second wedding anniversary , while Bryan is nearing his first. But, unlike Felker and Bryan, the two don’t share a language or approach. Bryan’s songs are such mirrors of his life that it often feels like he simply nails pages from his journal to a wall and scribbles a few chords above the lines he likes; Del Rey’s songs, though, are full of funhouse mirrors, refracting and reordering the truth into deeply considered designs. “Lies” is his clumsiest and dullest writing here, as if he’s invited an afterwork friend to a work party and is trying to explain everyone else’s jargon, only to end up quoting Fleetwood Mac .…