Supergirl Star Melissa Benoist On How Tonight's Revelation Impacts Kara's Relationship With Alex

Spoilers ahead for tonight's episode of Supergirl, titled "Crossfire."

In the final moments of tonight's episode of Supergirl, there's a game-changing revelation for Alex Danvers -- one that audiences have likely seen coming for a while now.

That is to say, she's not only realizing that she's a lesbian -- or at least bisexual -- but also that she is in love with National City Police Detective Maggie Sawyer.

It's a process that took her a while to really come to terms with -- early in the episode, she was so giddy to hang out with Maggie that it set off the cop's sensors, and Maggie told her point blank that she "didn't realize [Alex was] into girls." That led to a momentary panic by Alex, who denied it and backed awkwardly out of the conversation.

"You'd be surprised how many gay girls I've heard that from," Sawyer said, in a comment that clearly unsettled Alex a bit.

During a recent visit to the set of Supergirl, ComicBook.com was among a small group of reporters who got to talk to Melissa Benoist about how Alex's journey might impact the season going forward, and her relationship with her adoptive sister in particular.

"Well, I think that really season 1 served the purpose to get Kara on solid ground with herself, so now that Alex is kind of going off on her own path and learning something about herself, I think Kara can be there with an open mind and an open heart," Benoist said. "These two are inseparable and their bond is unbreakable, so whatever happens, Kara is going to be there for her."

Before the season started, producers pressed on the question of increased representation in superhero shows said that a major character on one of The CW's DC Comics series would come out as gay in the coming months. Many fans immediately assumed it would be Winn Schott -- which would theoretically be a way to get his crush on Supergirl out of the storyline.

Once Sawyer was announced as joining the show, though, all eyes turned to Alex as a potential suitor for the cop, who has served in both Metropolis and Gotham City over the years in the comics, and who was once engaged to Batwoman. Her first on-camera appearance, in which she and Alex had instantly-visible chemistry and Maggie's sexuality became an immediate topic of conversation, erased any doubt most fans had that the two would become the next will-they-or-won't-they couple of National City.

...And tonight, we're one step closer to the "will they," even though when she was pressed on the question, Alex still couldn't quite bring herself to say the words out loud.

Supergirl airs on Mondays at 8 p.m. ET/PT on The CW.