Hall mastered the album at Future Disc, located in McMinnville, Oregon. According to Mount, Lancaster's vocals for the album were "naked", implying no post recording editing had been done. Release Lancaster left the band in March 2007 citing a lack of writing credit on the band's releases. Lenzo and Bundrick filled in for Lancaster's vocals, while Garcia and Betts performed Lancaster's guitar parts. Garcia said this change made the guitars "sound more clear" and not "clutter[ed]"; on the other hand, the group found it hard working out who should sing Lancaster's parts. Lancaster's departure hurt Sanders personally as "he was a good friend". Later that month, the band supported Plain White T's on their U.S. tour. On April 4, "Black Cat" was made available for streaming via Hot Topic's Myspace profile. On April 13, the release of A Lesson in Romantics was announced. Between early May and late June, the band went on tour with support from Bedlight for Blue Eyes, Driver Side Impact, and Sick City. The track listing was revealed on May 18. On June 6, the band made "When I Get Home, You're So Dead" available for streaming via their Myspace profile. "Jamie All Over" was made available for streaming on June 19 via AbsolutePunk. A Lesson in Romantics was made available for streaming through AOL, and was released the following day through Fearless Records. Mayday Parade appeared at Dirt Fest in Birch Run, Michigan, before touring as part of the 2007 edition of Warped Tour from mid July to early August. In August, the band went on tour with Olympia and Sound the Alarm. The music video for "When I Get Home, You're So Dead", directed by Marco de la Torre, was filmed in September. In late September 2007, the band supported Paramore in Japan and Australia. The band went on a co-headlining tour with Madina Lake in October and November. The "When I Get Home, You're So Dead" music video was released on November 14, and the single was released on December 3. The band went on the Manwhores and Open Sores Tour alongside All Time Low, Every Avenue, and Just Surrender in January 2008. Between late January and late March, the band went on a package tour alongside Emery, As Cities Burn, Pierce the Veil and Cry of the Afflicted. In April and May, the band went on the Explosions In Your Pants Tour