Tristan Thompson's Shocking Infidelity The NBA star finally came clean about why he chose to cheat on the 'Kardashians' star several times. One of the biggest dramas to plague the Kardashian-Jenner family was Khloé Kardashian and Tristan Thompson’s relationship. Tristan cheated on Khloé at least three times, according to public knowledge. Fans of Khloé supported her through the years but still wondered why Tristan chose to step out on their relationship. While discussing his actions with Kourtney Kardashian, Tristan admitted why he hooked up with other women while he was with Khloé. Khloé and Tristan reunited and split multiple times.