A source tells PEOPLE that True, 6, had been asking to see her dad play for a while

Khloé Kardashian’s kids got to watch their dad play in the NBA for the very first time!

On Monday, May 13, the Good American founder, 39, was seen taking her kids Tatum, 21 months, and True, 6, to see their dad Tristan Thompson, 33, play in the Cleveland Cavaliers vs Boston Celtics game in Cleveland, Ohio.

In a TikTok video posted to NBC Sports Boston’s account, Kardashian can be seen bringing her kids over to their dad. Wearing a pink shirt and her hair up in two buns, True excitedly walks over to her dad, who has Tatum on his lap. Thompson stands up to hug Kardashian, carrying Tatum as they embrace.

True then shows off her special VIP pass to Thompson as she props herself next to her dad.

“This was True’s first time seeing her father play,” a source tells PEOPLE. “She’s been asking, so Khloé wanted to make this special for her. Tatum is still young, but will be fun to see what he thinks of his dad playing.”

“Tristan and Khloé have been really great at co-parenting and Khloé always wants to make sure she helps in ensuring the kids spend as much time with their father as they can,” the source adds.

In April, True celebrated her 6th birthday and her famous mom marked the special occasion with a series of posts shared on her Instagram Stories.

“My baby girl is six today,” Kardashian began alongside a photograph of herself and True sharing a kiss. “My sweet, silly but serious, sensitive but strong, kind, beautiful, loving little Tutu.”

“You changed my life forever and I love every part of who you are. Your smile, your laugh, the sass you get when you dance, your independence (even though that also makes me inside cry lol) the way you love. Love me, love Tatum, love your cousins, love Lovey, love your daddy. You are love. My love,” she continued, alongside a solo photo of True.

“True, my happy, fun, beautiful little girl. I will love the little ones [sic] you were before, the perfect girl you are today and every version of you you will be in the future,” the proud mom then wrote alongside a photo of the mother-daughter pair.

“You are my heartbeat, my happiness, my soul, my truth. My Tutu forever. Love Mommy x,” she concluded.