Disclaimer: I do not own Supergirl or anything to do with DC. I do not make any money from the writing of this story.
*****
"Men!" Lucy Lane exclaimed the second the door was opened.
"Erm, hi Lucy." Kara mumbled, allowing her friend to barge past her and then closing the door to her apartment behind the clearly annoyed brunette.
"God Kara, you're so lucky you're a lesbian." Lucy groaned, making her way to the kitchen before briefly pausing, and then pointing out, "I mean, I get relationships are complicated regardless of gender, and I'm totally oversimplifying the issue, but I mean, it's like were literally different species."
"Well, I'm one of the last surviving members of my race, and the rest are all evil, or my cousin, so..." Kara quipped, second guessing it a little when Lucy glared at her but decided to double down anyway, "So if anyone knows about interspecies dating it's me. And believe me, from what I can tell, it's just as frustrating."
"I don't know..." Lucy said, casually taking one of the beers which Kara kept in her fridge for Alex and opening it, then just as Kara was about to protest Lucy brought it up to her lips and quipped just before taking a swig, "You and Alex seem to have it down pat."
Kara let out an inhuman squeak, before trying to protest while clearly flustered, "What? No! No, we're not... I mean, we're sisters!"
"Adopted." Lucy unnecessarily reminded her, "It's not the same as me and Lois fooling around."
"We're not." Kara weakly protested again, and then frowned, "Wait, are you?"
"Am I what?" Lucy frowned, before her eyes went wide, "No! Seriously, no. And stop denying you are. It's adorable to see you try, and somehow you're even more unconvincing than Alex, but I already got the truth out of her, and she is away better liar then you are."
Briefly Kara opened her mouth to deny the truth again, but instead only side, "It's not just fooling around. I love her."
"I know." Lucy smiled, "I've known that since day one, and I'm shocked more people don't. Like James! He has no idea you two are together, or that you're even gay, and he won't hear otherwise. It's really, really annoying. Like seriously, you guys should just make out in front of him so he finally gets the picture and gives up on his stupid crush on you."
Kara blushed at the idea, mostly because she didn't find it unpleasant, then cautiously asked, "Is that why you're mad at James? Because he has a crush on me?"
"No." Lucy sighed, taking a big swig of her drink before admitting, "And yes. It's a number of things, actually. I guess it always is. Which is why I'm leaving."
"James, or?" Kara began.
"Both." Lucy explained, taking another big swig of her drink before continuing, "I'm quitting the DEO, effective immediately, and transferring to another department in the government. I'm not sure where I'll end up, but as long as it's anywhere except here that's fine by me."
"Oh." Kara murmured.
"Don't take it personally." Lucy said, "I just need a fresh start."
"No, I get it." Kara smiled softly, before opening her arms wide, "I'm going to miss you Lucy. We all will."
"I'm sure." Lucy said dismissively, allowing Kara to give her what was admittedly quite a nice hug. Then Lucy smiled wickedly against Kara's ear, "But I'm going to give you a parting gift. Something to remember me by."
"Oh?" Kara raised an eyebrow, allowing herself to be held in place.
"You see, ever since I got here, there's one thing I've really wanted to do, but couldn't. Not until now." Lucy told her.
"Oh?" Kara repeated, liking the sound of this more and more.
Lucy leaned in even closer and whispered huskily into Kara's ear, "I'm going to fuck Supergirl."
Kara blushed slightly, but pulled back and admitted with a shy smile, "I'd be totally okay with that. Supergirl would, I mean."
"I'm sure you would, you big dork." Lucy chuckled, before promising, "But I'm not just going to fuck you. I'm going to give you exactly what you need, Super Sub."
"Oh, you really have been talking to Alex." Kara blushed.
"Uh-huh." Lucy grinned, pulling back and looking Kara up and down, "You know, I totally thought I was done with this after college, but the first time I saw you in that little red and blue costume, mmmmm, mmmmm, mmmmm, I got myself off so hard thinking about riding your face. You have no idea."
"Thanks." Kara blushed awkwardly, before offering, "Would you like me to put on my super suit?"