American comedian and radio host Brian is the latest family member to appear during the shopping task, which challenges housemates to complete simple tasks without being distracted by their loved ones.
Brian actually popped up during Lewis Bloor's task: Lewis had to enter a room and write down messages for Big Brother as he received them, juggling the phone, fax machine, doorbell, carrier pigeon and TV, where Brian's message popped up.
Joined by their dog Norman, Brian said: "Hi Katie! I just wanted to send you a quick video to tell you how proud we are of you. We watch every episode, we laugh and we love what you're doing. You're doing the best you can. Enjoy the moment, have fun, we love you, hang in there. We're so proud."
Katie, who was watching from the other room, had tears rolling down her face as she cried out: "I love you!"
Katie and Brian, who married last year, live together in the US (hence her accent sometimes having an American twang.) Brian has been supporting Katie on social media – and passionately defending her. He tweeted yesterday: "Hey #CBB #CBBKatie @BBUK trolls Please direct your garbage tweets at me instead of @katiewaissel24. I can reply. It'll be more fun. RT this!"
Most recently he's been defending her occasional American accent, pointing out she does live in the US! When someone said they reckoned "Katie legit thinks she's one of the Americans", he replied: "She "legit" has duel citizenship so... I guess she's just being herself #HitUpGoogle."
And when another user asked why he found Katie so hot, Brian replied: "Because she is smoking hot... Don't blame yourself, you're only human. I married her."
Meanwhile, Lewis faces eviction on Friday night's show against Bear, James Whale, Sam Fox and Ricky Norwood. Two of the housemates will be going home in the first double dumping of the series.
CBB airs 9pm on Channel 5.
Fancy winning some GREAT prizes? Check out Reveal Competitions here!