Relationships are great… until they end in a fiery pit of deep, dark shadiness. Just like you low-key shade your ex, celebs do so, too. Whether it's in a song, a music video, or even a pithy Instagram caption, celebs whose relationships didn't end well aren't afraid to pull punches and let their shade flag fly. The most recent celebrity ex-couple that got in a quarrel via Twitter is Hania Aamir and Asim Azhar. The two were seen throwing major shades on each other. It all started when Asim Azhar posted a tweet that directed that his break up with the actress was a narrow escape. To this, Hania replied with a tweet that read as, “You can either be a celebrity or a bitter ex with no dignity.” It seemed as though the singer’s tweet was in response to a viral video of his ex that sparked controversy over its questionable content.