"Happy birthday @khloekardashian, You are the most beautiful human I have ever met inside and out," he wrote.
"Thank you for being an amazing mommy to our princess True. She is blessed to have someone like you to look up to. I wish you nothing but more success and sending you positive blessing your way. Enjoy your day Koko."
In recent episodes of KUWTK, Khloe was seemingly worried about Tristan's safety after revealing the basketball player was threatening to kill himself amid the Jordyn Woods cheating scandal.
"He's doing this to get a reaction out of me" she said to Scott Disick referring to Thompsons threats.
"Like, oh, so i'm just allowed to say that i'm going to kill myself at anytime? that's crazy" she added.
WATCH: Khloé Kardashian Says Tristan Thompson Threatened to Kill Himself
However, Tristan isn't the only ex trying to crawl back into the E! TV personality's life. Lamar Odom, Khloe's ex husband who was also accused of cheating on the Kardashians star, recently revealed he still hopes for a future with the celeb claiming she's "the love of his life."
WATCH: Lamar Odom says Khloe Kardashian is still the "love of his life"
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