Big Brother 'Big Brother' houseguests Derek Xiao and Claire Rehfuss reveal they are dating 10/18/2021 Big Brother houseguests Derek Xiao and Claire Rehfuss have revealed they are dating after their friendship took a romantic turn in the Season 23 jury house. Read More RELATED NEWS 'Big Brother' Season 23 winner Xavier Prather engaged to girlfriend Kenzie HansenBlack 'Big Brother' houseguests unite to celebrate breaking ground on the franchise'Big Brother' couple Christian Birkenberger and Alyssa Lopez reveal they broke up after 48 hours of dating TAGS: Big Brother Julie Chen Little Sister