There’s a surprising rumor going around that Shanna Moakler’s ex Travis Barker had an affair with Kim Kardashian before he started dating her sister, Kourtney, in 2021. Speculation about Travis’ alleged affair was first sparked when his daughter—whom he shares with ex-wife Shanna—posted an alleged text by her mother claiming Travis cheated on her with the Keeping Up With the Kardashians star.