It may not be the best-kept secret in the DC Universe, but at least one of the masks that Selina Kyle (Catwoman) has been wearing over the last few decades has finally come off for the first time. For years the sometimes over-sexual nature of Catwoman has played a role in the story-line of her character within the DC Universe, but it’s never been confirmed or detailed in the past.

That changed with the latest installment to the series, Catwoman #39, which was illustrated by Garry Brown and under series’ writer Genevieve Valentine. Sometime flirting with Batman, sometimes with other female members of the Rogue’s Gallery, long-time fans probably won’t be surprised by the kiss shared between Selina and another female character in the comic; but it does show a bit of growth for the series.

Instead of allowing DC Comics to continue to play coy with Kyle’s sexuality (pretending like Selina Kyle’s sexuality doesn’t exist, then suddenly bringing it back into focus only when the story needs it) the kiss stands as a simple confirmation so things can just move on. That was sentiment written by Genevieve Valentine on her blog, who stated that kiss, “wasn’t a revelation so much as a confirmation.”

It’s an important chapter in Catwoman’s history, one that started 75 years ago actually. It may be hard to believe, but the original Catwoman first appeared back in 1940 in Batman #1.

When speaking about Selina’s new romantic interest Valentine said that the woman, “knows enough about Selina that their honesty has become something of a shelter in a situation that’s getting increasingly dishonest for everybody involved. The more we talked about it, the more it was something I wanted to make happen.

This is by no means the first comic-book character to express a sexuality other than heterosexual. Recently Alan Scott, one of the Green Lanterns, came out as gay back in 2013, and even DC’s own Batwoman confirmed that she was a lesbian back in 2006.

“Please be assured that Selina’s longstanding connection to Batman has not been forgotten; that is not how bisexuality (or humanity) works,” explained Valentine in the same message. The story-line between Batman and Catwoman has always been a particularly interesting romance b-plot for the comics, and it looks like that won’t change anytime soon.