Things are heating up between Kristin Cavallari and her boyfriend, Mark Estes. On her “Let’s Be Honest” podcast, Kristin, who is 37, shared that her relationship with the 24-year-old influencer has given her the best sex she’s ever had.

During a game of “Truth or Drink,” they talked about their great chemistry and Kristin mentioned that sex gets better with age. She explained that as women get older, they become more confident and less worried about their bodies, which can improve their sexual experiences.

Kristin said she feels more present and confident during sex now, and she finds Mark incredibly attractive, which makes their sex life very exciting.

Mark then surprised Kristin by saying that she’s the best he’s ever had. Kristin didn’t know he felt that way and was surprised because he had never directly told her she was the best.

In the episode, which comes out on Tuesday, Kristin and Mark talk about their sexual fantasies and if they’ve ever faked an orgasm.

Kristin has talked before about her unusual relationship with Mark. In April, she mentioned that things were getting quite serious, and they were even discussing the possibility of having kids.