 Ron learns in the third season finale, "Li 'l Sebastian," that Leslie and Ben are secretly having an affair despite Chris' ban on workplace romances, and he warns them they are risking a political scandal that could cost them their jobs. Later, at the funeral of Pawnee's celebrity miniature horse Li'l Sebastian, Ron is nearly killed as a result of Leslie and Ben's affair. When their efforts to hide their relationship accidentally cause Li'l Sebastian's eternal flame to be filled with lighter fluid instead of propane, Ron creates a massive fireball when he lights it, which burns off his eyebrows and part of his mustache. The season ends as a horrified Ron learns that his first ex-wife, Tammy, has arrived to see him; the news is enough to make his second ex-wife, also named Tammy, run away in horror.
