What Happened to ‘Big Brother’s Kat Dunn & Nick Maccarone? A Deep Dive Into Their Split

Alyssa Norwin September 22, 2025, 6:00 pm

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Kat Dunn and Nick Maccarone — Monty Brinton/CBS

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Kathryn “Kat” Dunn is one of the Big Brother alums who will be returning to CBS to compete on Season 38 of The Amazing Race. The season features former Big Brother stars competing alongside their relatives or significant others, and Kat is teaming up with her boyfriend, Alex Romo.

The last time fans saw Kat on television in 2019, she began a relationship with fellow Season 21 Big Brother contestant Nick Maccarone. So, what happened between then and now? Scroll down for everything we know.

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