Chapter Summary: Prompt by orthankg1: "How's this, it's a bit AU. Lena and Oliver are togeather, they are all living on the same Earth, with Kara as Lena's best friend and assistant who has a massive crush on the boss's boyfriend. Oliver likes Kara, but just as a friend. No one knows that Kara is Supergirl and Oliver is the Green Arrow, he has a lead lined hood, who ocasionally save the city togeather. Supergirl save Oliver as Oliver. Long story short. Kara likes Oliver, Supergirl likes the Green Arrow, Oliver develops something of a crush on Supergirl, and Lena is the wonderfull girlfriend/friend who thinks there is something going on with the two, and it's all one big complicated mess."

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29. All or Nothing

She bumped on him twice that day.

How could she bump on him twice the same day like that? How could she just stand there, lost into those deep blue eyes of his? That perfect smile that she never knew if it was a sarcastic one or a genuine one.

She felt guilty.

Guilty, because she tried to deny it, but it was impossible by now. Not after what happened.

She was falling for her best friend's boyfriend. And she knew she was in deep trouble.

- I'm a terrible friend! – She whispered to herself as she walked through the DEO.

- Why are you a terrible friend? – Alex, her sister, asked as she approached Kara on the corridor.

- Nothing… I… I need to go home… I see you later.

Alex stared at Kara, finding her behavior really weird. It was not like Kara was sick or anything; she just fought a giant monster a few hours ago. She was tested and her health was perfect. She thought it was a personal thing and she would tell her when she is ready, Alex thought.

- Ok, sis. If you need anything…

- I know – Kara smiled and stormed away.

Kara flew high on the sky as she remembered the day she met him. It was the best and the worst day at the same time.

FLASHBACK

Kara walked around the DEO feeling like she could have a clone or something. There was a lot to do at CatCo and it was not like she would use her powers in her work. Somebody could see it, and it wasn't right anyways. She carried a huge pile of papers and got distracted when she felt a shoulder collapse on hers and all the papers she carried just flew around.

- I can't… Believe it! – Kara said as she looked hopeless to all the papers falling. – You should watch… - She started with an annoyed tone on her voice and looked to her side just to see a tall blonde man with a look of desperation on his face. – Where you're going… - She completed, adjusting her glasses as she blushed.

- I'm so sorry… - He said as he tried to help her collect all the papers back. – I was distracted with my phone, and didn't see you… Are you ok? Did I hurt you?

- No, it's… It's ok… - She looked at the pile of papers he was giving back to her and smiled at him. She decided she would, just this once; use her powers to organize everything again later. – Are you… Looking for someone?

- Yes, I actually am… - He smiled at her – I'm Oliver Queen by the way…

- Kara Danvers! – She reached her hand as he grabbed it and gave it a small kiss on her hand.

If she wasn't blushing hard enough before, she was definitely blushing hard now.

Handsome and a gentleman, she thought. What a nice combo.

- Hi handsome! – Lena Luthor came walking towards them, her hand touching his shoulder

Oliver looked at Lena and his smile got way bigger as she gave him a kiss fully on the lips. Kara looked down, feeling awkward with the scene as she felt something cold down her stomach.

So this was the new hot guy Lena was seeing, according to her.

- So you've met my best friend Kara, cool. One more thing to scratch from what to do next list. – She smiled as she looked at Kara.

- Yes, I did. I accidentally made a mess of her work, I hope this don't cause any trouble.

- Oh, you and your distractions… It's ok – Lena laughed

- I can take care of that later – Kara smiled, still feeling awkward.

- Great, because I want you to join us for lunch. Are you free?

- I… I actually have a thing to do for my sister… maybe next time?

- Sure, ok… - Lena said as she held Oliver's hand – Let's go?

- Sure… - Oliver looked at Kara and blinked at her after Lena turned her back to walk – It was nice to meet you.

- You too… - Kara whispered as she watched them walk away.

She hated lying. She really did. But she wouldn't be able to have lunch with Lena and the guy she had a crush on as soon as she saw him. This was terrible, and embarrassing.

She was screwed.

END OF FLASHBACK

Kara flew the city feeling the wind on her face. It was peaceful and the thing she loved the most: to fly. She felt so free. It was the perfect place for her to think the mess she was in, without anyone questioning her.

If only her problem was just the fact that she was falling for Oliver...

FLASHBACK

Supergirl flew towards Star City as fast as she could. It was all over the news how a lunatic man called Ricardo Diaz was opening fire against anyone that stood up to him. She heard a few grunts and sounds that told her a huge fight was happening. She heard the trigger and that horrible sound of a bullet coming out of a gun.

She landed right in front of the victim, stopping the bullets from reaching their target.

- Supergirl! I guess you have nothing else to do in National City…

- It's all over the news, in the entire country. Do you really think I would ignore it? I don't only take care of my city! I suggest you turn yourself in.

- Will you make me? – He laughed

- Yes!

- You are just another meta human I can stop.

Kara was going to laugh but she heard someone else's laughter and turned quickly her head only to see the Green Arrow behind her. She was so focused on Diaz, she forgot to look who he was fighting with and if he was ok. Apparently he was.

- I don't think you have been paying attention to the news, Diaz…

- Don't have time for bullshit!

- If you did, you would know I'm not a meta human! – Kara smiled as she looked at his gun and melted it with her heat vision.

She flew quickly at him, grabbing him by the arm as she flew high with him on the sky.

- I'm an alien!

Diaz looked at her in silence, terrified as she used her super speed and in five seconds handled Diaz over to ARGUS. She came back to where Green Arrow was really quickly and landed gracefully on the ground.

- That was impressive! Thank you! – He said as he smiled at her.

- You're welcome. It's nice to see you are able to smile.

- I smile when I have a reason.

Kara looked at him feeling intrigued. She knew about other heroes from another city but never met one of them in person. She heard about the time travelers that helped stop atrocities in history, she heard about the fastest man alive, she heard about the bat guy from Gotham and the hawk couple and she always wanted to meet one of them. She heard a lot of bad things about the Green Arrow but she decided she would wait to see it with her own eyes, she learned from her mistakes of judging others.

- You must have a tough life then… People say a lot of things about you and I don't think they are reasons for smiling.

- People talk too much! All lies…

He turned his back to her and was about to go away when she held his arm, making him turn around.

- And what is the truth?

- You don't want to know! – He said mysteriously.

- I wouldn't ask if I didn't!

Green Arrow looked at her and took a deep breath.

- They say I'm a killer… Maybe I am, but not for the reasons they say.

- I'm listening – Supergirl crossed her arms on her chest

- You might not be the only one – He looked suspicious to his sides and was taken by surprise when Supergirl grabbed his arm and flew with him to a rooftop.

- Now I am! – She smiled at him – I'm sorry…. – She added as she noticed he was a bit uncomfortable with the sudden flying.

- I'm ok… - He looked at Supergirl in a serious way – The truth is that I survived hell in an Island for 5 years… I had to be a killer to survive everything that happened to me… I don't kill anymore, but I have to make people believe I will. I don't have super powers; all I can rely on it's my abilities…

- And scare the hell out of people is one of them? – Supergirl arched an eyebrow

- Yes!

- This story is familiar… - She said thoughtful, remembering something – Oliver Queen has been through hell in an island…

- That's because I'm Oliver Queen – He said as he took his hood and mask off.

Kara looked really surprised at him, at his honesty.

- Why trust me with this information? – She said with surprise on her voice.

He took a few steps closer to her, looking deeply into her eyes.

- I know I can trust you.

- How?

- I just do… I also know you're Kara Danvers…

- What?

- The glasses… Not a great disguise – He smiled at her.

- I'm… This…

- It's ok…Hey… It's ok. As you can see, I'm good at keeping secrets.

- Well, I'm glad.

Kara looked at him, standing so close to her and she couldn't believe it. The man of her dreams was the hero that intrigued her so much. She was even more intrigued now.

- Does…

- If Lena knows? – He looked at her – No. I don't want to put her in danger…

- Some of my friends know… About me…

- It's different… - He said with a troubled look in his eyes – I… I just can't tell her…

Kara wasn't sure if he wanted to protect her or if he didn't trust her, but she kept it to herself.

- So… Oliver Queen a super hero…

- Kara Danvers, an awesome alien…

They smiled at each other.

Kara felt that again, the electricity running through them, around them. She had to stop these feelings somehow. She could never hurt her best friend, even if she felt broken herself.

END OF FLASHBACK

Water ran through his body as he stood in the shower, his hands resting on the wall as his skin burned. He needed a long hot shower to try to relax, which it seemed impossible to do because he couldn't stop thinking about her.

He knew it was wrong.

He had a girlfriend for God's sake.

The day he found out Kara was Supergirl was the day everything changed for him. Because he found out he was having a deep and secret crush on the same person.

He usually was a faithful guy, when he loved, he truly loved someone. He liked to be a romantic guy.

The problem now, was that Oliver felt something wasn't right. But he had no idea what was it.

He knew Lena since before the island. The Luthors and the Queens were always close, and his dad once insisted for him to ask her out. He did and it was surprisingly nice. After the Island, he felt alone, he needed to be alone, but Lena refused to let him be. One thing led to another and they ended hooking up on his bedroom. Since then, things have been weirdly nice to him.

But still, he missed something. It felt like a missing piece of a puzzle. And the day he bumped into Kara and messed up her work, he felt something different, but back then; he couldn't tell what it was.

He loved Lena, but he enjoyed fighting crime as the Green Arrow, by Supergirl's side.

He felt guilty, and had no idea what to do.

Especially after the awkward dinner Lena insisted on having with her best friend and him. He could feel Lena's eyes burning on him as he talked to Kara about something he couldn't remember now.

Maybe she could tell something was different inside of him? Or was he becoming paranoid?

All he knew was that somehow along the way, something changed…he just didn't know if it was for the better.

FLASHBACK

Oliver sat on the couch in Lena's mansion as she walked towards him, smiling mischievously. She straddled his lap, giving him kisses on the base of his neck.

- I was thinking… - She whispered to him – You could stay tonight…

Oliver caressed Lena's dark and soft hair as she kissed him passionately on the lips.

He couldn't respond her the same way.

He really wanted to know why. He used to love being like this with her.

Something was definitely wrong. And it felt wrong all of it.

- Move in with me? – She smiled as she looked at him and bit her lower lip, nervously.

- Lena… I don't know… - Oliver said as he helped her sit properly on the couch, getting up right away. – I'm perfectly fine where I am…

- I… I just thought…

- Don't get me wrong – He sat by her side and held her hand. – I just… I'm not sure if this is right…

- Us?

- Not us… This… Moving in…

- It's everything ok with you?

- Yes… I guess… - Oliver looked to the ground. – Whatever it is, it's going to be ok… I just need to figure out my life and who am I and I don't think it would be right to take this huge step right now…

- You're right, I'm sorry… – Lena smiled looking at the ground… - I think I'm rushing things…

- You're impulsive and believe the best of life, that is one of the things that made me like you… It's ok…

- Let's pretend I never said anything. – Lena said as she gave him another kiss.

Oliver kissed her back, still feeling something was off.

For a moment there he panicked. But he was glad Lena understood him, or at least he thought she did. His phone rang and Oliver got up again.

- I'm sorry… It's work… I gotta go…

- It's ok… - She gave him another kiss. – I love you…

- See you later. – Oliver kissed her back quickly and stormed out in a hurry.

Lena kept staring at him, thinking about how he never said I love you back and about how he said he liked her.

Oliver answered his phone as he went back to the bunker.

- Supergirl, it seemed urgent… Ok, I'll be there.

Oliver got to the bank just in time to help Supergirl stop a robbery. He looked suspiciously at her, but waited until it was all over and they were alone to ask. Again, they found themselves on a rooftop, talking.

- You could have stopped those guys…

- I know… I just… - Kara said as she rested her back against the wall and looked at the sky.

Oliver noticed the change in her tone and walked closer, worried.

- It's everything ok?

- I just needed someone to talk…

- I thought you said your friends knew about you…

- They do… But they don't understand…

Oliver looked at her, still confused. He had no idea what was going on or what to say, so he waited for her to explain. Kara wiped a few tears from her eyes and looked at him.

- Today is the anniversary of the day Krypton exploded… The day I lost my parents… That I lost everything…

Oliver looked startled at her, and suddenly it all made sense.

He understood it, she was right. Because he had experienced a traumatic event that changed his life and made him lose a loved one, his dad.

- Kara, I…

- I don't know why but… I feel like you can truly understand…

- What it's like to know you're about to lose those you love the most and there's a tragedy bigger than anything you saw before happening, and there's nothing you can do to stop it…

- Exactly.

Oliver walked closer to Kara and pulled her to a hug. He wasn't someone who enjoyed hugs, but he felt Kara needed one. And he was so right.

She needed badly.

She just stood there, hugging him, her cheeks resting on his chest, her eyes closed.

They stood in silence for almost five minutes, just like that.

- I'm sorry… - He said as he caressed her hair – I'm sorry you had to go through all of this… I'm here for you.

- Thank you… - Kara smiled as she lifted her eyes to look at his eyes.

They stared at each other, in silence.

Kara felt her hear racing and as if she was waking up from a trance, she jumped and stepped away from Oliver. She felt her heart breaking into a million pieces, but she couldn't do this to her best friend.

- I'm sorry… I… I don't think is a good idea for us to be this close right now… - Kara said as she looked at him.

- I know. – Oliver said as he looked to the ground.

Kara looked surprised at him.

- I can't do that to Lena… - He whispered to her – Even if I'm feeling in my heart that being here with you is the right thing…

- But is not…

- I know… - He looked at her with sadness in his eyes – I also know it's not right for me to be with her…

Oliver turned his back and started walking away.

- Oliver, what are you going to do? – Kara asked in a worried tone.

- I'm still figuring it out.

Kara looked him walking away, feeling in her heart something difficult was about to happen. And she had no idea how she would handle it.

Why did she have to fall for him? And it looked like he fell for her as well.

This was a huge mess to be in.

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NOTES:

Spoiler Alert: · Prompt by victor 17: "Other idea is that Oliver or Kara lost the memory like in flash Cause and Effect it could be interesting." – Oliver...definitely Oliver will lose his memory. Ideas are already popping into my head.