Los Angeles, California - Kim Kardashian and Khloé Kardashian shared a particularly difficult moment to film for their upcoming show The Kardashians.

In honor of their new Hulu series' debut this week, the siblings got real about what has been the hardest moment to capture so far.

As per USA Today, Khloé first spilled that she's become "immune" to filming.

"I don't really remember I'm being filmed," the 37-year-old revealed.

Lizzo Lizzo opens up about "very dark" struggles in first sit-down interview on harassment lawsuits

The Good American owner then dished that the hardest moment to film was the morning Kim called her about Tristan Thompson's newest cheating ways.

For those who haven't been keeping up with this drama, the Sacramento Kings player, with who Khloé shares 4-year-old daughter True, admitted to fathering a son with personal trainer Maralee Nichols earlier this year.

"That was hard," Khloé remarked.

"I think that was hard for me too," Kim agreed, explaining that she called her sister while working out.

"Déjà vu," Khloé jokingly quipped, adding, "I think the first time it was either Kendall or Kylie that called me. Now it's good old Kim."

Khloé's reference was to Tristan's past infidelity scandals that caused the former pair to break up in 2019. Though Khloé got back together with and then split from the athlete in July 2021, she shared that the pain "doesn't get easier" but "you do become more numb" to it.

"When you're hurt so many times – your reactions, your responses to the same thing happening over and over again – there is a numbing sensation to it," Khloé added.

Momager Kris Jenner also touched on Tristan's recent scandal, claiming it caught the whole family "off guard" and that some moments "are a bit shocking, but you're not really focused on the filming of it at all until you watch it back."

See how the family reacts to Tristan's paternity drama on The Kardashians, which airs this Thursday.