The former couple, who are parents to one-year-old daughter True, parted ways earlier this year when it emerged that Thompson had kissed Kardashian’s family friend Jordyn Woods at a party in Los Angeles.
Speaking on Laura Wasser’s Divorce Sucks podcast, the reality star explained that she tries to keep things amicable with the basketball star as she believes that her daughter can “feel” negative “energy.”
“It does f****** suck, it does,” she told Wasser, a US divorce attorney.
“And there’s moments that, because our personal emotions are still in there, for me, Tristan and I broke up not too long ago so it’s really raw and those emotions can be heightened at times but I do everything my power to not even bring [them up].
“True is like one and a month old so she doesn’t really know what’s happening but to me she does know. She feels energy and I’m a big believer in that so I do everything in my power to not put any sort of heavy energy around her.”
The 34-year-old also addressed her decision to invite her ex to True’s first birthday party in April, telling Wasser that she wanted to create “happy childhood memories” for her daughter.
“The party was really for me, I wanted a happy, heavenly place but I know she’s gonna wanna look back at all of her happy childhood memories like we all do,” she said.
“I know her dad is a great person and I know how much he loves her and cares about her so I want him to be there and it was civilised and we did it.”
Shortly after Woods opened up about Thompson’s kiss in a tell-all interview with Jada Pinkett Smith’s Red Table Talk, Kardashian posted a tweet suggesting that her former friend had “split up her family,” but soon backtracked to place the blame on her ex.
“This has been an awful week & I know everyone is sick of hearing about it all (as am I),” she wrote. “I’m a rollercoaster of emotions & have said things I shouldn’t have. Honestly Tristan cheating on me & humiliating me, wasn’t such a shock as the first time.
“What’s been harper & more painful is being hurt by someone so close to me. Someone whom I love & treat like a little sister. But Jordyn is not to be blamed for the breakup of my family. This was Tristan’s fault.”