According to the PEOPLE source, Khloe's "feelings about Tristan cheating is something that she is still dealing with. She has good weeks when she is fine about it and weeks when she is upset about it."
While filming Keeping Up with the Kardashians in Palm Springs recently, "Khloé has seemed emotional," the source tells PEOPLE.
The report has stated that Khloe, 34, is having problems trusting Thompson, 29, after he cheated days before he was about to become a dad.
"Khloé still struggles with this sometimes. She wants to move back to Cleveland, but she isn't sure what date she is going. The move is postponed for now. She seems very upset about leaving her family. She had the best summer in L.A.," said the PEOPLE insider.
In fact, Khloe has made a series of odd Instagram posts showing her angst.
In one, she wrote, "RIP to all the hours of sleep I've lost to overthinking."
She also told fans via social media, "You can go to the gym, drink your water, and take your vitamins. But if you don't deal with s— going on in your heart and head you're still going to be unhealthy."
But two days later, Khloe wrote a self-affirmation in a pink outfit, noting, "All of that, and you're still standing. I am proud of you! You're doing a great job! Keep going ?."
Fans were shocked when news broke that right before Khloe had their baby, sleazy Thompson was caught kissing another girl at a New York City nightclub!
The athlete locking lips with his alleged mistress made the entire Kardashian/Jenner clan "livid" with Thompson, as RadarOnline.com reported.
But he rushed to Khloe's side for True's birth and she took him back.
Still, their living arrangements are now up in the air!
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