Disclaimer: I do not own Supergirl or anything to do with DC. I do not make any money from the writing of this story.
*****
"No Kara!"
"But-" Kara started.
"I said no." Alex said firmly, quickly grabbing a magazine and curling it up, preparing to do something she hadn't done in years.
"Hey, no fair!" Kara protested, "It isn't even that bad."
"No?" Alex questioned.
There was a brief pause, then as quickly as she could Alex bonked Kara on the nose with the newspaper like a disobedient puppy, Kara then grumbling, "God, you can be so childish."
"Look who's talking." Alex quipped, hitting her sister again.
"You know this doesn't even hurt?" Kara whined, and then when she was hit again she pointed out, "And I can stop this at any time."
"And the fact that you're not just proves I'm right, and you know you're being stupid." Alex pointed out, only for Kara to firmly grab the magazine on her next attempt.
"I'm in love with Lena Luthor." Kara beamed, "What's wrong with telling her that?"
"Kara, you've barely started dating." Alex pointed out pleadingly, "You've only gone on three dates."
"Or like a billion if you count all those friend dates." Kara argued, letting go of the magazine.
"It wasn't that many." Alex grumbled, letting the magazine fall down to the table as she quickly interrupted Kara as her sister opened her mouth again, "I counted."
"You counted?" Kara frowned, before realisation hit and she sighed, "Because she's a Luthor?"
"Yes! Which is the number one reason why you should be taking things slow." Alex argued.
"Oh?" Kara frowned, "And just how long after you started dating did you tell Maggie you loved her?"
The brief silence was telling, as was the way Alex huffed, "That's not relevant."
"Why? Because Maggie isn't a Luthor?" Kara asked.
"YES!" Alex exclaimed, "Maggie is not allegedly the black sheep of a family at war with mine."
"To be fair it isn't the entire Luthor family. Just Lex and Lillian." Kara argued.
"So half? Great." Alex quipped dryly, "So what? Are you waiting for a long lost Luthor to tip the scales?"
"Well, Lena is the long lost Luthor, as she only just found out she's biologically one of them, sooooo..." Kara pointed out cheekily, before sighing and taking Alex's hand, "I love how protective you are of me. Even though I'm the one who's bullet-proof."
"Yeah, but you have a big glass heart, which I don't want to see broken." Alex quickly butted in.
"And I love you for that." Kara pushed on, "But I love her. I just got scared this morning about her freaking out, but deep down I know she'll welcome it. I just needed my big sister to talk through it with me. Because I love Clark, and Sara, but I've missed this."
"I've missed this too." Alex admitted, before sighing, "You really want to tell her, huh?"
"I can't not." Kara beamed, "Talking just made me realise just how badly I need to tell her. God, I want to scream it from the rooftops. Which is something I can literally do."
"Well try to refrain." Alex grumbled, before admitting, "But I get it. I don't like it, but I get it. It's your choice. But it's going to be awhile before I trust her."
"I get that, but I swear, once you get to know her you'll love her as much as I do." Kara beamed, before quickly correcting herself, "Well, almost."
Alex rolled her eyes, "Yeah, don't worry Kara, I'm not going to steal your girlfriend."
"I know. You're happy with yours." Kara grinned, "Speaking of which, Lena had a great idea, which I think might help you trust her."
"What, a double date?" Alex guessed.
"Yeah..." Kara admitted, "But I was thinking we could do better."
"How?" Alex frowned.
"We can make it a triple date." Kara grinned excitedly.
*
"You're so cute when you're nervous." Kara said dreamily after a few minutes of watching her girlfriend fuss over every little thing they had prepared together.
"I'm glad my suffering amuses you." Lena grumbled softly.
"Hey, come here." Kara said softly, gently pulling the other woman into her arms, who pouted adorably, but let her do it. Then Kara smiled softly and reassured, "This is going to be amazing, and my family is going to love you. I can't wait to introduce you to them as my girlfriend. I'm so happy we're doing this."
There was a brief pause and Lena sighed, "How do you do that?"
"Do what?" Kara asked.
"Make me feel like everything is going to be okay with just a few pretty words and a smile?" Lena questioned/admitted/blushed.
"It's one of my superpowers." Kara grinned, slowly leaning in for a kiss.
"Yeah?" Lena grinned, also leaning in.
"Yeah..." Kara confirmed, gently kissing Lena Luthor for a few heavenly seconds before pulling back, caressing her cheek and softly murmuring, "Lena, I..."
Just then there was a knock at the door, and the Super and the Luthor quickly broke apart and scrambled to the door, where they were greeted by the stern face of Alex who grumbled, "Hi."
And a grinning Maggie, "Hi."
"Hi." Lena greeted nervously.
Avoiding the urge to further echo that word Kara insisted, "Well, don't just stand there, come in, come in."
Maggie and Alex walked into Kara's apartment, closing the door behind them. There was then a long, awkward silence, which Maggie tried to break before being interrupted, "So, erm-"