Round two? Khloé Kardashian and Tristan Thompson are “not back together” after their breakup, but they are “giving their relationship another try.” A source told People on Wednesday, July 1, that the Cleveland Cavaliers player has been “working hard” to show his ex-girlfriend that he’s a new man after their drama-filled breakup in February 2019 after Tristan cheated on Khloé with her younger sister Kylie Jenner’s best friend Jordyn Woods.