Perhaps never before have so many been so eager for something so steeped in heartbreak. Taylor Swift’s legions of devotees have eagerly anticipated her new album, “The Tortured Poets Department,” in hopes of gaining insight into her notoriously private six-year relationship with actor Joe Alwyn – particularly her perspective on its demise. Swift delivers. In a track titled “Fresh Out the Slammer,” the 14-time Grammy Award winner sings of spending “Years of labor, locks and ceilings / In the shade of how he was feeling.” Another song called “So Long London” has her recounting that “I stopped CP…