Love was almost in the air for two "Arrow"-verse mainstays in The CW's four-show "Invasion!" crossover. Well, not really, but there was certainly a hint of it that got left on the cutting room floor. According to executive producer Andrew Kreisberg, a scene between White Canary and Supergirl suggested that Kara's sister Alex would be more interested in Sara than Kara herself was, but the exchange never made it into the final cut.

“There was a little exchange between Sara [Caity Lotz] and Kara [Melissa Benoist] that I really liked -- I don’t think we even filmed it -- where Sara says, ‘Hey, do you want to get a drink when this is all over?’” Kreisberg told Entertainment Weekly, “and Kara says, ‘I think you wanna meet my sister.’ Just the idea of starting the Sara/Alex [Chyler Leigh] shippers going…”

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"Supergirl" Season 2 has sent Alex Danvers, Kara's adoptive sister, on a journey of self-discovery. Following her introduction to Detective Maggie Sawyer, Alex came to the realization that she's gay and has slowly come out to her family over the first half of the season. "Legends of Tomorrow's" White Canary, on the other hand, has been comfortable with her sexuality since she debuted on "Arrow"; "Arrow" made no fuss over the fact that Sara was in a committed relationship with Nyssa al Ghul, and she has subsequently hooked up with both men and women over the course of the character's trajectory.

Of course, keeping up an inter-dimensional relationship might be a little tough, even for Sara Lance. After all, Alex Danvers lives on another earth entirely. However, "The Flash's" Cisco Ramon gifted Kara with a device that will make travel between dimensions a lot easier on himself and the inhabitants on Earth-38, so perhaps it's not as out-of-the-question as it may seem at first glance. Then again, things were getting steamy between Alex and Maggie just before "Supergirl" broke for its winter hiatus.

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Starring Melissa Benoist as the Girl of Steel, “Supergirl” airs Mondays at 8 pm ET/PT on The CW. The network is also home to Grant Gustin as the Scarlet Speedster in “The Flash,” airing Tuesdays at 8 pm ET/PT, Stephen Amell as the Emerald Archer in “Arrow,” airing Wednesdays at 8 pm ET/PT and Arthur Darvill, Brandon Routh and Caity Lotz in “DC’s Legends of Tomorrow,” airing Thursdays at 8 pm ET/PT.