Supergirl Alex Gay

Supergirl: Alex Coming Out Leads to a Sisterly Misunderstanding, and Then a Bond as 'Unbreakable' as Ever

Now that Supergirl‘s Alex Danvers (played by Chyler Leigh) has come to a realization about her sexual identity, sparked by new partner-in-crimefighting Maggie Sawyer (Floriana Lima), her journey will not be without one small hiccup.

And coming from, unexpectedly, the person closest to her.

“Alex and Kara (Melissa Benoist) have a little misunderstanding, actually,” showrunner Andrew Kreisberg tells TVLine. “She thinks Kara might not be OK with it.”

Indeed, Alex will sense a “sadness” in her sister after sharing her bit of self-discovery, the EP says — though it’s not born of any disapproval (“Kara doesn’t have an ounce of prejudice in her”), but guilt.

“Kara feels like their entire childhood was relegated to worrying about keeping Kara’s [alien] secret, so she feels awful that, maybe if she hadn’t come along, Alex would have been able to reconcile this aspect of herself sooner,” Kreisberg explains.

But once all is said and done, Alex’s journey will only strengthen the sisters’ connection, to be sure.

“All this does is make them love each other more, which is something that was really important to us,” Kreisberg shares. “As people will find out this season, everybody treats Alex with the love and respect that she deserves.”

As Benoist put it during our recent visit to the CW series’ set, “Now that Alex is kind of going off on her own path and learning something about herself, Kara will be there with an open mind and an open heart.”

After all, “Those two are inseparable. Their bond is unbreakable,” says Benoist. “So whatever happens, Kara’s going to be there — no matter what.”

Supergirl airs Mondays at 8/7c. (With reporting by Andy Swift and Vlada Gelman)