It's been a long time coming but Stella (Miranda Rae Mayo) and Severide (Taylor Kinney) finally took a major step in their relationship on Chicago Fire.

This week's two-hour event saw the lovestruck firefighters get back together after dancing around their feelings for each other since breaking up in Season 4. During a cathartic scene at Molly's, Stella confronted Severide about his weird behavior — in which he kept avoiding her — asking that he come clean about what's been on his mind lately.

"Can you just, for once, just tell me what you're feeling?" she said.

Severide, who has always struggled to articulate how he feels, answered her request the only way he knew how: with a passionate kiss and then, presumably, some steamy bar sex. (Hey, the clothes were coming off so one can only assume what happened next.) This latest development, while surprising in how it happened, doesn't come as a shock to longtime Stellaride shippers given the strong signals they'd been sending each other.

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"They had this pretty hot relationship from the start that had had roots prior to the show, and then her ex-husband came back into play and that sort of ruined things for a year and a half," showrunner Derek Haas explained to TV Guide. "But we've been stoking those flames. Those embers never went out."

Now, it looks like they're finally back on. Let's just hope Severide's ex Renée, who is headed back to town, doesn't stick around long enough to mess things up between them.

And while things might be running hot for Stellaride, another couple has suddenly cooled down. Thursday's back-to-back event also saw Brett (Kara Killmer) and Antonio (Jon Seda) again break things off, much to Brett's dismay. The EMT went through a rollercoaster of emotions after first believing she might be pregnant with Antonio's child and then confirming that she isn't pregnant, only to find out that he has been set up on a blind date — meaning they weren't actually exclusive.

"That's great Antonio," she told him, though it's clear the Intelligence detective's revelation took her by surprise. Determined to move on, she promised a "new Brett" who would keep her options open rather than continue being hung up over her ex.

But just because they've split up again, it doesn't mean you should give up hope on Brettonio. According to Haas, their story has no end in sight. "Personally, I don't know if there's ever gonna be a resolution with these two. Every time I think there's gonna be a resolution, there's not," he added.

Brettonio might be down, but don't count them out just yet.

Chicago Fire airs Thursdays at 10/9c on NBC.

Jesse Spencer and Monica Raymund, Chicago FireJesse Spencer and Monica Raymund, Chicago Fire