The NBA player expressed his gratitude to his ex for continuing to help care for his younger brother, who has epilepsy and other medical conditions, despite them no longer being romantically involved

Khloé Kardashian (left) and Tristan Thompson (right).Credit : Kevin Mazur/MG22/Getty; Cassidy Sparrow/Getty

Khloé Kardashian is a pro at leaving the past in the past.

On the April 3 episode of The Kardashians, Khloé, 40, reunited with her ex Tristan Thompson to celebrate his younger brother Amari’s 18th birthday, which she said was a “huge milestone” and “huge accomplishment.”

“Every day we have with him is a blessing,” Khloé told the cameras of Amari, who has epilepsy, in addition to other medical conditions that require around-the-clock support.

Tristan Thompson poses with his little brother Amari Thompson at The Amari Thompson Soiree 2019 in support of Epilepsy Toronto on August 01, 2019 in Toronto, Canada.George Pimentel/Getty

Before the festivities began, she sat on the couch with her ex — who she dated on and off from 2016 to 2021 and shares daughter True, 6, and son Tatum, 2, with — and he thanked Khloé for her efforts to celebrate his brother.

“I appreciate you putting this all together. It’s definitely a special day,” Tristan, 34, said.

“I know Mommy is happy and she’s smiling down on us,” he added, referring to his and Amari’s late mom, Andrea, who died in January 2023 from a heart attack.

“She is,” Khloé agreed.

In the wake of Andrea’s death, Tristan was granted legal guardianship over Amari in February 2024, and Khloé has continued to help out with caring for his brother, even though they are no longer romantically involved.

Khloé Kardashian on ‘The Kardashians’.Disney

Kris Jenner and Khloé’s sister Kim Kardashian were also in attendance at the birthday party, and in a confessional, Kris praised her daughter for being a caretaker to everyone in her life.

“Khloé truly is such a big part of Amari’s life and I think it’s so incredibly impressive how she takes care of him,” Kris, 69, said. “She’s literally a gift from God and so is Amari.”

In her own confessional, Khloé reflected on her relationship with Amari, as she said, “Amari has never and will never be a burden or anything like that. Amari is one of the most special souls I have ever met.”

On Amari’s birthday in July, Khloé paid tribute to him in an Instagram post as she called him a “sweet angel” and shared a carousel of photos with him and True and Tatum.

“I can’t believe you are 18! You have changed our lives in the best possible ways! Thank you for being an angel to us all! You are the sweetest, silliest and most loving young man,” she wrote. “I hope you feel how much we love and adore you our sweet angel Amari

Tristan Thompson with his brother Amari, son Tatum and daughter True on Amari’s 18th birthday.Tristan Thompson/Instagram

Tristan celebrated his brother’s birthday with his own post, as he too shared photos of his kids and his brother and wrote, “Happy birthday, Amari! Big number 18! We are so blessed and fortunate for all the blessings that you bring to our lives! You are always a beacon of light! I love you so much and I’m so so blessed to be your older brother.”