10 most disliked Chicago Fire coupled, ranked

We don't hate these characters, but these combos didn't work.

CHICAGO FIRE -- "Best Friend Magic" Episode 809 -- Pictured: (l-r) Monica Raymund as Gabriela Dawson, Jesse Spencer as Matthew Casey -- (Photo by: Adrian Burrows/NBC)
CHICAGO FIRE -- "Best Friend Magic" Episode 809 -- Pictured: (l-r) Monica Raymund as Gabriela Dawson, Jesse Spencer as Matthew Casey -- (Photo by: Adrian Burrows/NBC) /
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10. Hallie Thomas and Matt Casey

Chicago Fire - Season 9
CHICAGO FIRE -- "Double Red" Episode 909 -- Pictured: Jesse Spencer as Matthew Casey -- (Photo by: Adrian S. Burrows Sr./NBC) /

Hallie Thomas (Teri Reeves) and Matt Casey (Jesse Spencer) had the rare Chicago Fire romance that predated the show. As we learn in season 1, the couple have been on and off for a whopping 8 years, which didn't instill a ton of confidence in their future.

Related: It's been 5 years since the last One Chicago crossover

It was sad to see Thomas get killed in the season 1 finale, but her time with Casey felt so flat that it was more of an instance of feeling bad for Casey than it was concern over the fact that we would never get to see the character again. Things improved drastically from here, relationship wise.