Rumors that Justin and Hailey Bieber's relationship was on the rocks ran rampant earlier this year while he was recording his new album, Swag, but since its surprise July 11 release, the "tension has settled," a source close to the couple exclusively tells Us Weekly. "The intense focus and emotional toll of creating new music had put a strain on their marriage," the source says. "When Justin is in the studio making new music, he gets completely consumed and shuts everything else out.