Chicago Fire: A Complete Timeline of Kelly Severide & Stella Kidd’s Relationship, Season By Season

Stellaride has experienced several ups and downs, from splitting up several times due to busy work schedules to personal family dilemmas driving them apart. Despite their issues, Severide and Kidd always find their way back together because they love and respect one another’s humanity and work ethic. Now that Kidd and Severide are ready to start a family after marrying, the couple’s longevity from season to season is a testament to their strong relationship, making Chicago Fire must-see TV.

Seasons 4-5

Stella & Severide Have A Rocky Start

Stella and Severide at Molly's in Chicago Fire season 4
Chicago Fire Season and Episode Number Episode Name Milestone
Season 4, Episode 15 Bad for the Soul Stella Kidd’s arrival at Firehouse 51 and reunion with Kelly Severide.
Season 4, Episode 21 On The Warpath Stella and Kelly’s first on-screen kiss.
Season 5, Episode 1 The Hose or the Animal Grant Smith stalks and attacks Stella.

A few episodes later, Severide and Kidd have their first on-screen kiss at Molly’s bar while they are fixing an ice-maker machine, revealing their strong chemistry and appealing attraction towards one another. Their bond goes further during the season 4 finale as they make out in Stella’s apartment. However, problems ensue during the season 5 premiere as Stella’s ex-husband, Grant Smith, stalks and attacks her. Severide defends Stella by stepping in and stabbing Grant. Stella refuses to press charges against Smith, causing tension between her and Severide that lurks throughout the fifth season.

Seasons 6-7

Kelly & Stella’s Relationship Negatively Affected By Smith

Stella and Severide in uniform Chicago Fire
Chicago Fire Season and Episode Number Episode Name Milestone
Season 6, Episode 1 It Wasn’t Enough Stella stays at Kelly’s place.
Season 6, Episode 15 The Chance To Forgive Stella and Severide start dating.
Season 7, Episode 7 What Will Define You Benny Severide dies.
Season 7, Episode 22 I’m Not Leaving You Kelly vows to Stella he’s the man she deserves.

As Kelly and Stella announce their relationship at Firehouse 51, Severide’s ex-girlfriend, Renee Royce, comes to Chicago. Thankfully, Royce only needs Severide’s assistance on a case, and doesn’t impact his love for Stella. However, Kelly takes an emotional hit in season 7 when his father Benny dies, detaching himself from Stella and his loved ones. The couple’s status is in further turmoil when Stella’s childhood friend, Tyler, confesses his love for her. Stella breaks up with Kelly before rekindling their romance in the season 7 finale as Severide vows to be the man Kidd deserves in Benny’s cabin.

Seasons 8-9

Stella Moves In With Kelly And Plans To Marry

Severide puts a ring on Stella Chicago Fire
Chicago Fire Season and Episode Number Episode Name Milestone
Season 8, Episode 12 Then Nick Porter Happened Kelly asks Stella to officially move in with him.
Season 9, Episode 6 Blow This Up Kelly vows to never leave Stella.
Season 9, Episode 15 A White-Knuckle Panic Kelly proposes to Stella in a burning building.

Kelly realizes his decision to leave Stella alone was a mistake, telling his girlfriend that he knows she’s capable of becoming a lieutenant. They vow to never let each other go and always support each other’s career, further signifying the love they share. After this, their relationship is taken to the next level when Severide proposes to Kidd inside a burning building, which Stella emphatically accepts. This marriage proposal proves that no matter what dangerous or harmful circumstances they face, Kelly and Stella will get through it together.

Seasons 10-11

Severide & Kidd Finally Get Married

Stella and Severide get married Chicago Fire season 10

After the explosive marriage proposal, Stella finds herself incredibly busy and absent throughout season 10 due to her commitment to getting her Girls on Fire program rolling in other firehouses. Kidd’s absence in Firehouse 51 makes Severide worried about their relationship and intentions to marry. When Stella returns to Chicago, she also admits her worries about the future of their careers, but that their love for each other will never change. Kelly proposes to Stella again, this time with a ring, proclaiming himself “the luckiest man in Chicago.”

Despite disagreements surrounding the food tasting and alcohol reception, along with Severide getting beaten up by members of a drug ring, Kelly and Stella finally get married during the season 10 finale. This memorable marriage is partly due to the return of Kelly’s best man, Matt Casey, and the officiating by Chief Wallace Boden. The vow exchange between the couple also solidifies their love and admiration for each other despite an unknown future. Unfortunately, their honeymoon is interrupted by the drug dealers going after Severide, leading into the season 11 premiere.

Seasons 12-13

Kelly & Stella Want To Start A Family

Kelly Severide and Stella Kidd One Chicago Crossover 2025
Chicago Fire Season and Episode Number Episode Name Milestone
Season 12, Episode 1 Barely Gone Stella brings Severide back home after a lengthy absence from Firehouse 51.
Season 12, Episode 13 Never Say Goodbye Kelly admits to wanting a family with Stella.
Season 13, Episode 12 Relief Cut Stella wants to start a family with Kelly and agrees to look at adoption services.

Considering the complexity of their relationship and the challenges of being firefighters, Severide and Kidd have grown into multidimensional characters. Having children will test the couple further in their attempts to balance family and work.

During the season 12 finale, Severide mentions his desire to start a family after looking at a photo of Sylvie Brett’s baby Julia. Stella is surprised by Kelly’s statement, leaving spectators hanging in terms of what she thinks. Shortly after the One Chicago crossover in season 13, Stella admits to Kelly that she agrees with his intent to start a family. Considering the complexity of their relationship and the challenges of being firefighters, Severide and Kidd have grown into multidimensional characters. Having children will test the couple further in their attempts to balance family and work.

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