Bachelor in Paradise alum Kat Izzo is being accused of writing messages to a secret offscreen boyfriend while filming season 10 of the reality dating series. During the Tuesday, August 19, episode of "The Viall Files" podcast, hosted by Nick Viall, guest Allyshia Gupta, who appeared on the current season before leaving in week seven with Sean McLaughlin, labeled Kat, 29, as a "not an honest person" before detailing her claim.