Along with his side gig, Jens Lekman has put out five albums. Now he’s collaborated with David Levithan on the novel “Songs for Other People’s Weddings.” One wedding is fake, ending in a three-way ...

Along with his side gig, Jens Lekman has put out five albums. Now he’s collaborated with David Levithan on the novel “Songs for Other People’s Weddings.” Jens Lekman, left, and David Levithan began ...