A/N: Inspired by S1 ep 16 Falling aka Kara is hot as hell on red kryptonite and it should've been an entire arc.
It had started on a hot summer night
A recent heatwave had gripped National city causing massive power outages due to the over usage of air conditions and fans. Cooling stations had become overpopulated and as a result many of the homeless wandered the streets looking for a fight to relieve the tempestuous emotions raging within them. Crime had nearly doubled, and the citizens of the city had prayed to whatever Gods were listening for there to be a break in the weather.
After a very chaotic day, Lena Luthor lounged comfortably in the arms of her girlfriend of two years, Kara Danvers or Kara Zor-el as she had come to find out. They sipped wine slowly and conversed lightly on the balcony of Lena's penthouse, grateful for the small breeze they had, being several feet from the street level.
Kara noted the colors of the sky as the sun set, and Lena marveled too at its beauty.
They were immersed in their own world atop the city, content with each other's presence.
Some time later, Kara cleared her throat nervously and set her wine glass down on the table next to them. Upon hearing the sound, Lena turned around and rested her head against Kara's shoulder to get a good look at her, their eyes met instantly. The heiress found herself captivated by Kara's intense gaze, whose eyes were focused on her, as if nothing else existed in that moment except Lena.
"Kara? Are you ok?" She asked worriedly and Kara nodded softly before responding, "Lena, I just, uh, need to ask you something." The hero reached up to fidget with her glasses that she seemed to have forgotten she took off once she came home.
Lena's brows furrowed as anxiety settled within her gut. The last time she had seen Kara this nervous was when she had revealed her identity to her, which had ended up being one of the worse experiences of her life. She questioned everything about their friendship up until that point and after a heated argument, told Kara that she never wanted to see her or their friends ever again.
Kara had felt completely lost without Lena, but she tried to respect her space as much as she could which only ended when a threat on Lena's life caused her to give nonstop surveillance to the heiress until the assassins were found. During that time, Lena was grateful for Supergirl's strong presence. The threat had caused her to become anxious and paranoid but every night she would see Kara hovering outside of her apartment, her hair loosely falling on her shoulders in golden waves and her cape flapping behind her regally in the wind. Lena felt Kara's love and protection from a distance, and it gave her the strength to endure. However, it also made her realize how much she missed Kara, how much she needed Kara and a few weeks later, she sent her a text.
Lena (3:32 pm): I can't stop thinking about you.
Kara had been working on a boring report that was taking her forever to type up, which she dropped immediately after getting a text message from Lena.
She made it to her apartment in less than a minute and landed swiftly on her balcony. A few moments later the pair of them were in Lena's bedroom, making love passionately and the world and its problems were forgotten.
They spent the weekend clearing up any and all doubts on each of their parts and had been together since then.
There was nothing that could tear them apart and besides, what could be worse than finding out your best friend is a famous alien from the planet Krypton, who hid in plain sight and worked for an agency which according to the government didn't exist?
Lena cupped Kara's cheek and looked deeply into her girlfriend's beautiful cerulean eyes, hoping desperately that whatever was making Kara so nervous wasn't going to break her heart again.
Kara could sense Lena's turmoil and smiled to assuage her worries. "It's nothing bad Lena, I told you I would never hurt you again. I'm open to you in both my mind and my heart and I…I-uh." Kara started stuttering and took a moment to collect herself.
A few months ago, after a game night at Alex's apartment, Kara decided to linger a bit and ask her sister what she thought about her proposing to Lena. Alex had been ecstatic, but Kara was quick to mention her betrayal before they committed to one another and felt Lena had every reason to say no.
"Kara, Lena forgave you when you guys became official and since then you two have been disgustingly in love…"
"Marriage requires an unfathomable amount of trust to make it work-"
"So don't give Lena any reason to not trust you again Kara." The agent said it like it was the simplest thing in the world. "Look if Lena's not ready to marry you, then you can just wait until she is, what really is the worse that can happen?" Alex added before turning on the TV for them to pick a movie to watch before Kara headed home.
Kara had thought about Alex's words for a long time before ultimately deciding, she was done just being Lena Luthor's girlfriend. She wanted to be Lena Luthor's wife and she was determined to prove to the heiress that she could be a good spouse.
Soon, she found herself ring shopping, trying to find something that matched Lena's style but wouldn't put her in debt financially. After many unsuccessful attempts, she decided to have the ring custom made with a rare pink stone from Krypton. She recruited Winn for the design of it and offered to pay him but the tech declined.
"Kara, I'm rooting for you guys and I'm honored that you wanted me to create something so special for you." He had told her and only requested to be invited to the wedding.
It took Winn a week to create the ring and Kara was very pleased with the result of it. The problem that lay ahead was her gaining the confidence she needed to propose to Lena.
And a month later, here she was.
Lena's soft hand was stroking her cheeks and she leaned into it, gazing lovingly at the woman before her. Their eyes locked and Kara found the strength she needed from the unconditional love she found in Lena's emerald depths.
"Lena, I love you so much, I think I have loved you from the moment we met. You mean so much to me that it's hard to even put it into words…" Kara found herself tearing up as she reflected on the affect the heiress had on her life, on her world. "You're everything to me…" She continued, "I cant imagine my life without you."
Lena felt her heart swell with so many emotions as she watched her girlfriend slip to the balcony floor on one knee, focused intently on her.
"You're so beautiful Lena, so intelligent and I feel unworthy of you." Kara confessed honestly, "But I am so grateful to Rao, that our paths crossed, and you chose me as your partner..."
Kara tapered off as the sound of Lena's heartbeat sped up at her words and tears began spilling down her pale cheeks.
Rao, did she know already?
Before the anxiety choked the proposal out of her, Kara reached into her back pocket and felt around for the small box. Feeling the ring in her hand reminded Kara of why she was doing this in the first place. She wanted the world to know that they belonged to each other. National city wasn't enough anymore, and she was convinced that the heiress was her soulmate. Marriage would make everyone whom Lena interacted with aware that she was both protected and loved by the most powerful woman in the world.
Lena looked absolutely gorgeous, her hair was down, and she was in one of Kara's button-down shirts that hugged her curves in all the right places. Her legs were exposed to the warm night and the gaze of her easily distracted girlfriend.
The heiress raised an eyebrow and her cheeks tinted red when she saw a look of hunger pass over Kara's features as she took her in.
"Kara?"
Kara's eyes returned to her and she breathed out her name softly. "Lena…" She started, holding her lover's gaze, silently hoping her nerves wouldn't get the best of her. "Will you marry me?"
Lena had caught on to Kara's intentions about a month ago when their usually light conversations during their date nights had suddenly become deeper and goal oriented. Kara started asking her about her plans for the future and if she wanted to remain in National City.
"I'm not sure about always staying in National City but all of my future plans include you Kara." Lena had told Kara on one particularly snowy day over some pizza and pot stickers. Kara blushed and seemed content with her answer but days later when they met for lunch, she brought it up again, asking more direct questions regarding the technology she was developing and the deadlines she had for certain projects. She noticed that the hero had become more interested in her career and she spent countless time telling her about her new scientific developments and explaining them in detail if Kara didn't understand fully.
One night as they lay in bed naked, entwined and tangled up in the sheets, Lena said, "You know lately Kara, you've taken such an interest in the things I do and my future goals, I have to ask if there's a reason behind it or is it just general curiosity?" She asked while running a finger over the hero's abs which flexed under her touch.
Kara had swallowed nervously and suddenly found a spot on the wall fascinating, " I uh- it's definitely general curiosity, and I love to hear you talk about things your passionate about."
Lena knew her girlfriend was partially lying and filed it away for later thought. "Well, I'm curious about things you do to, you can always talk to me about your reports or blog posts, and especially your dirty work for the DEO." She said the last part with a raise of an eyebrow and Kara met her eyes and smiled lovingly at her. "Will do." The hero replied and from then on, their conversations began lasting late into the night, and Lena managed to fall further in love with the girl of steel.
A few weeks later, Lena had been out with the super friends at a bar, she had been on a winning streak at pool against both Winn and James when she noticed Alex and Kara were nowhere to be found. After Lena won a final time, much to the pair's dismay, she went to seek out her girlfriend and finally found her and Alex in the back alley of the bar. She hadn't meant to eavesdrop on their conversation but overheard the tail end of it which sounded like an intense discussion about a ring.
"Winn asked me if you wanted to engrave anything in it. You know, like something lovely dovey." Alex said with a playful roll of her eyes at the last part, but her expression softened as she regarded her sister.
Kara stood in careful contemplation and just when she was about to answer, Lena decided to give them privacy and turned to head back inside the bar.
Lena began to put everything together, the depth of their recent conversations, how involved they had become in each other's lives and came to the apparent conclusion that Kara intended to propose.
So, she began making plans of her own.
Lena commissioned a jeweler to design an engagement ring for Kara. Her desire was to give it to Kara the day that the hero proposed so that they both wore symbols of their engagement and commitment to each other.
And now, the moment had finally arrived.
Her love was still kneeled in front of her looking hopeful, waiting for her answer, when Kara's eyes widened in realization that she had forgot the ring. She reached into her pocket again and fumbled around in it for a moment, before pulling out a glass ring box and opening it. Kara smiled at the gasp that left Lena's lips as she regarded the ring.
It was an intricately designed gold band with blue accent stones swirling around it and in the middle sat what Lena believed to be a pink diamond. It was truly breathtaking, and Lena's cheeks were wet again with her tears flowing freely.
"It's pink Kryptonite. On Krypton, pink is a symbol of same sex relationships, so I figured, in this context it would be-"
"It's beautiful Kara." Lena said tearfully and Kara beamed, smiling widely as she wiped Lena's tears away. "Really?" She asked jovially.
"Yes." Lena breathed and Kara froze.
"Is that like a yes it's beautiful or a yes that you'll-"
"It's a yes to everything Kara, of course I'll marry you."
Kara let out a shout of delight and wrapped Lena up in her arms kissing her deeply. Lena pulled back and splayed her fingers for Kara to slip the ring on which she did easily, and Lena held it up for both of them to admire.
"It looks perfect on you Lena." Kara said unable to wipe the smile off her face. Lena kissed her again and then broke away to pull out a small velvet box of her own and smirked at the look of confusion on Kara's face. She popped the box open and Kara's eyes widened in shock.
"So, Kara Zor-El, girl of steel, savior of the world. Will you do me the honor of wearing this ring as a symbol of our future together and of my never-ending love for you?"
Oh Rao.
Kara was captivated by the sight of the ring in front of her. A large ruby cut to match the symbol of the house of El, sat in the middle of a gold band with white diamonds encircling it in a fastidiously crafted wire flower. Kara marveled at it, rendered speechless as Lena took her hand and slipped the ring on her finger.
Kara sat transfixed by the ruby and felt every bit of anxiety that was inside of her melt away. There was a burning suddenly in her veins but it didn't feel painful the way they burned with regular kryptonite. It felt like power had been unlocked inside of her and energy was coursing through her making her acutely aware of her strength and surroundings. She felt exhilarated and confident, it was as if the ring itself had banished her self-doubt and inhibitions, leaving her to feel utterly and completely Kryptonian.
It was pure bliss.
Rao, this must be what drugs feel like.
Lena sat waiting for Kara to respond and when she finally spoke, the hero's voice was noticeably an octave lower than normal and caused a shiver to travel through Lena's body.
"You're mine Lena, and I'm yours forever." Kara said, her eyes intense and dark as they collided with Lena's. The heiress threw her arms around Kara's neck and sighed happily against her as the hero pulled her in for a tight hug, holding her flush against her body, almost possessively.
"Yes Kara, I'm yours." Lena whispered into her ear.
The brunette was so caught up in the moment and the feel of being in her future wife's strong arms that she missed the red glow in Kara's veins as her hands moved up and down her back.
And the flash of crimson in the depths of her azure eyes.