The Kardashian clan are without a doubt a close-knit family, but one revelation on last night's episode of "Keeping Up with the Kardashians" has fans scratching their heads.

Mama Kris was teasing Brody Jenner about having a crush on Kim, when Brody decided to put his bro Brandon on blast and let the world know that he and Kim have gotten pretty close. "That was him and Kim!" Brody proclaimed. "You're forgetting that. They kissed back in the day."

While the two aren't blood relatives, the news that Kim and stepbro Brandon kissed shocked more than a few fans.

Check out flicks of Kim K in the gallery above.

Source: UsWeekly