Article continues below advertisementKelly Clarkson's ex-husband, Brandon Blackstock, and her former assistant Brittany Marie Jones allegedly started to get close while living under the singer's roof when they all quarantined together in 2020 during the COVID-19 pandemic. "What Kelly didn't realize was she was literally housing her replacement," read a Rob Shuter #ShuterScoop report on Sunday, September 14. "The lockdown gave Brandon and Brittney the perfect chance to get closer, right under Kelly's nose.