Lena pressed her hand to her chest, wondering if it was possible for her heart to beat out of her chest, if the sonic boom of Supergirl's exit could pull out her heart. After a moment, she looked down, reaching to run the fingers of her other hand over the cold metal, biting her lip as the pad of her thumb pressed into the latch.

She couldn't…

She shouldn't.

But she did.

Before she could regret it, she pressed her thumb into the button, feeling her heart jump into her throat, as she pinched her eyes shut, until she heard the synthetic wind of Supergirl's flight and the touchdown of red boots, running towards her.

"What happened- wha-" Supergirl's breathless, fearful words were cut off by a few, clean steps from Lena to clear the distance between them. More specifically, by her lips.

Kara's gasp was swallowed up by their kiss, cool fingers on her cheeks making her head spin.

And Lena's world wasn't exactly stable either. Her composure- or whatever she believed she had left of it, fell away as she pressed closer, her body falling against Supergirl's, the heroine's' arms catching her, holding her upright. The automatic protective movement seemed to push Kara out of her daze, the blonde's lips moving with Lena's. The embrace pushed past a frenzy, and became slow. They stopped clutching to each other, and relaxed into steady holds and soft lips.

When their kiss broke, both women caught their breath, eyes closed, their foreheads pressed gently against one another's. It would've been perfect. If not for the knock at the door.

Lena was the first to pull away. She straightened herself up, becoming the CEO of L Corp right before Kara's eyes, making the younger girl look down at her suit and remember who she was. Or who she was masquerading as.

"Just a moment!" Lena called out, her voice as clear as crystal despite her flushed cheeks, turning towards the door as she tugged the tendrils of black hair back into her bun. Taking a deep breath, she turned back towards Supergirl, reaching her hand out, gently squeezing Kara's. "Come back tonight." The woman whispered, dark eyebrows raised. Not as a question, or even a plea. Just as a proposition.

"I-" Kara began, quietly, thinking of all the repercussions, but all she could think of was Lena in that moment. "Okay."

Once she was off the balcony, she pressed her back up against the cold building, closing her eyes and warily listening to the interaction inside. Once it was confirmed just to be Lena's assistant coming in for the day. Letting out a deep sigh, Kara flew to her apartment, narrowly missing a few buildings along the way.

"Kara!" Alex exclaimed, following her sister into the other room. "Talk to me." She said, once she'd caught up with her, laughing slightly.

"Nothing."

"Bull."

"..."

"Stop pouting. It doesn't work on me."

"Yes it does."

"Kar. What's wrong? I know that look."

Kara nervously adjusted her glasses, the tip of her index finger finding it's way between her teeth. "I- well." She swallowed lightly. "Well not I-"

"What?"

"It's not me. It's- Supergirl."

"Is something wrong with your powers?"

"No- no. I mean, it has nothing to do with Kara. I mean, it does, but it can't and-"

"I'm not following, Kara." Alex said, furrowing her eyebrows in concern.

"Someone kissed Supergirl. And Supergirl kissed back. And maybe a little bit of Kara too. And I don't really know what to do."

Kara watched as Alex began to speak, her hands raising to gesture a few times before they fell to her sides. "I-"

"You?"

"I don't know what to say to that. I was preparing myself for something alien. Who was it?"

"Uh…"

"..Kara. What did you do?"

"I didn't do anything! Supergirl-"

"You're the same person, Kara."

"No, we're not." The blonde's voice was closer to snapping than Alex had ever heard her. While it was normal for most people to snip, it was extremely rare for Kara.

"People love Supergirl much more than they love Kara, Alex." Kara said, calmer, but Alex could feel the edge to her voice.

"That's not true, Kar." Alex said after a moment, reaching out to brush her sister's hair away. "Most people just don't get to know Kara. Because Kara isn't on almost every minute of the 24 hour news cycle." Alex leaned against the counter and pulled Kara into a soft embrace, sighing as Kara burrowed into her arms. "What is this about?" Alex asked carefully, stroking Kara's hair softly.

"She likes- or loves Supergirl. She doesn't want me."

Alex hid her slight take-aback from the pronoun, she was the last person to judge, or even question, just letting Kara fill the silence.

"I can't do anything. If I try to be with her, I keep a secret. If I tell her, she knows I'm just- me."

"Hey." Alex interrupted, pulling Kara up. "There is no such thing as 'just' you. You were miraculous long before you were ever Supergirl." She rubbed her sister's arms softly. "Whoever this girl is, if she wants Supergirl, she would be lucky to even know Kara Danvers. Okay?" She waited until Kara nodded to continue. "I'm not going to give you the speech- just. Remember why you keep Kara a secret, okay? If you trust someone enough to tell them.. then I trust you. Just please, please be careful?"

Kara let out a deep breath, biting the inside of her lip. "I know. I wouldn't put anyone in danger, I don't even know if it would go past ki-" Her cheeks flushed. "I don't even know if it would be serious. I just really, really want her, Alex. I don't know why. But I want her in my life so badly.." Her words held an innocence- that even Kara didn't really understand why she was feeling the way she did. Or what she was feeling.

Alex wrapped her little sister up in a tight hug, wondering what girl had Kara's heart knotted up.

Supergirl stumbled onto the balcony of the L Corp penthouse, her mind filling up with flashbacks as she spied Lena, nursing a glass of wine at her desk. Her face looked just as full of thought as Kara's mind felt. And the blonde felt like her mind was going to explode.

The heroine slipped through the open door, rousing Lena with her footsteps, feeling awkward and out of place- so much more like Kara than Supergirl.

Then Lena smiled at her. And she forgot who she was entirely.

Before she could even speak, Lena was up, and walking towards Kara, her hands clasped in front of her. "You came." She said, breathlessly.

Supergirl smiled shyly, the flush covering her cheeks not very Comic Book ready at all. "Of course I came, Lena." The woman's name felt like sunshine on her lips, her chest fluttering.

"I was worried- maybe that I had stepped over my boundaries. That maybe I'd made you.. uncomf-"

"You didn't." Kara interrupted, a little too quickly, making Lena bite at her lip to hide the width of her smile.

"I didn't?" The brunette's voice was soft as she rested her hands on Supergirl's waist.

"You didn't. Uncomfortable was the farthest thing." Kara's arms wound around Lena's shoulders, finding the slight height difference from the other woman's heels a little too perfect.

"I can't say I'm not relieved." Lena's forehead gently rested against Kara's, her lips just inches from the blonde's.

"Yeah?" Kara squeaked out, her eyes falling to Lena's lips.

"I did ambush you. And I'm sure you don't have many good experiences with sudden surprises."

"Just because something's surprising, doesn't mean it's bad. And I've never seen any angry aliens as beautiful as you."

Lena's grin threatened to stretch off her cheeks, her arms winding tighter around the girl, slipping underneath her cape. Having the heroine in her embrace, Lena realized just how small Supergirl was. Even if she was bulletproof, Lena felt a sudden rush of protectiveness fall over her. She pressed Kara closer to her, feeling Supergirl's fingertips on her cheeks, with soft, curious touches.

"I can't stay away from you." Kara whispered softly, her eyes flickering over Lena's features.

"I can say the same. The minute I got a contact method, I used it within 30 seconds. I'm sorry about that, by the way. I didn't mean to be a pest."

"Please don't apologize."

"Tell me what to do then. Tell me what you want me to do." Lena's voice lost it's usual confidence, the trust in her eyes pouring out, flooding up to Kara's neck.

"Kiss me."