Kardashian took to Instagram to celebrate hitting 158 million followers on the social media platform with a picture of her and True.
"158 Million!!!! Thank you!!! We love you!!! Love my bestie and I 🤍" the 36-year-old captioned the post. Thompson reportedly left a heart emoji in the comments.
The pair reportedly broke up a few weeks ago, but neither of them has directly commented on the split.
"They’re getting along. There is no drama," a source told Page Six and said that "everything is amicable, and they are on the same page with co-parenting."
The pair were even recently seen eating with their daughter in Calabasas, Page Six reported.
Thompson seems to still be on good terms with the Good American founder's family after he shared Kendall Jenner's 818 Tequila on his Instagram Story, the outlet noted. "All we drink to celebrate tonight," he captioned the post.
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However, sources claimed that Kardashian "really trusted Tristan and felt he was making a genuine effort" to rebuild their on-and-off-again relationship after multiple scandals. "She hates that she was wrong about him again," the source added.
The Keeping up with the Kardashians star is "trying her best to move on" and "doesn't ever want to be in this position again."
"She is done falling for Tristan's empty promises," the source said.
Earlier this year, the pair hit a rough patch when Instagram model Sydney Chase claimed to have hooked up with the 30-year-old. He was also embroiled in a libel lawsuit against a woman claiming that Thompson is the father of her son, but DNA tests reportedly revealed that Thompson is not the father.
"They had been working through the cheating rumors for the last couple of weeks, but Khloé told Tristan he lost all of her trust and the relationship could not be repaired," an insider told E! News.
Earlier this month, Thompson was reportedly seen entering a room with three women at a party and then emerged later looking "disheveled."
"They stayed in the room behind closed doors for at least 30 minutes. When he arrived, his shirt looked all pressed and when he came out his shirt was a mess," an insider said.
Thompson shares son, Prince, with ex-girlfriend Jordan Craig. He and Kardashian were first linked in late 2016 before welcoming True in 2018.