Ciara and Future - Celebrity de-coupling has been a tabloid sport for decades, but with the advent of social media, dragging your ex in public has never been easier.Our list of messiest celebrity splits kicks off with Ciara and Future. The couple got engaged in October 2013, and a few months later had a son together. In August 2014, however, the called off their engagement and it's been messy ever since. Since then, the "Run Up" MC has lashed out at CiCi on social media, claiming she keeps their son from seeing him, and even took jabs at her character. In turn, the "I Bet" singer sued her former fiancé for slander and libel.(Photo: Larry Busacca/Getty Images for NARAS)