Jesse Spencer

Firehouse 51's sweetheart tied the knot and launched a new chapter in her life outside Chicago.

Grab the tissues and revisit some of "Brettsey's" cutest moments as a couple on Chicago Fire. 

After 5 seasons of One Chicago bliss, the paramedic and the firefighter are finally husband and wife.

Casey and Severide's latest cigar chat gave Chi-Hards some serious déjà vu. 

"It is just so satisfying to get to see them finally make that commitment to each other," Killmer told NBC Insider.

Love is in the air in Illinois!

Only a couple like Brett and Casey could turn a fish supplies store into a romantic wedding venue.

Brett's character is stepping away from Firehouse 51 to focus on her family. 

Chi-Hards always love a Matt Casey guest appearance — and this time, we hear wedding bells! 

You may need to turn up the A.C., because these stars have been making it hot in here.