Yoosung - Saeyoung cheats on MC

* He shipped MC and Saeyoung tbh

* Yoosung is closest to Saeyoung in the RFA and he loved her hanging out with MC too

* So he didn't expect to see her sitting outside his apartment, hugging her knees to her chest, her face hidden

* "MC, what's wrong?" he asks MC gently, setting down his briefcase on the floor and kneeling in front of her

* MC doesn't answer and Yoosung starts to get worried

* Wasn't Saeyoung supposed to be on a mission?

* Oh no, what if something bad happened to him?

* "MC, please, talk to me." Yoosung says, scared

* And then he hears her soft cries

* And his heart breaks

* He reaches out to hug her, but he stops, fingers hovering inches away from her

* She's not yours to hold, Yoosung

* Yoosung pulls back his hands, wishing he could take away whatever is making her feel sad, making her cry

* "MC," Yoosung pleads, desperate to comfort her

* "I thought he truly loved me." MC whispers softly, so softly that Yoosung had to lean closer to her

* It was then that MC lifts her face and Yoosung realizes they're so close to each other

* But he didn't have time to feel embarrassed

* Because MC is crying

* MC is crying and he is dying

* Suddenly he's cupping her face and wiping her tears, biting his lip to keep himself from becoming overwhelmed with his own emotions

* He can't stand seeing her like this

* Worse, what did she mean by her words?

* "Why don't we go inside, MC?" Yoosung gently tells her, holding her hands and pulling her to her feet gently

* He hurriedly unlocks his door and leads MC inside, seating her on the couch

* And then the story spills out of her mouth in between sobs

* How Saeyoung has been colder to her recently

* How he came home from his mission and went to bed almost immediately

* How MC saw the lipstick mark on the collar of his shirt

* How she heard him murmur a name that isn't hers in his sleep

* "I asked him who she was." MC tells him

* "The silence was deafening. He didn't have to tell me. I already knew."

* Yoosung wraps his arms around her, holding her against him as she cried

* Her shoulders shaking, her cries echoing around the apartment

* Yoosung's arms tighten around her as tears roll down his cheeks too

* Saeyoung…how could you?

* Yoosung held her until MC couldn't cry anymore

* He made her tea and stayed with her until she fell asleep on the couch, on his lap

* But he had to do something

* Gently setting down her head on the couch, he covered MC with a blanket and left a note, saying he would be back soon

* He left a glass of water on the coffee table next to the note

* And he went to his best friend's bunker

* His anger rising

* His heart ripped to shreds at this betrayal

* The memory of her crying face haunts him

* And the fact that it's Saeyoung

* Saeyoung!

* His best friend who he trusted the most out of the RFA members

* Saeyoung broke her heart

* Broke his heart

* Broke his trust

* Yoosung reached the door and bypassed the security with ease

* He's been here loads of times

* To hang out with Saeyoung and MC

* But he had a feeling he wouldn't be back here in a long time

* He saw the redhead sitting in his room

* Working

* Focused on whatever he was typing up on his computer

* "How can you work at a time like this?"

* Saeyoung doesn't even turn around

* "Because I have to."

* And before he knew what he was doing, Yoosung is grabbing the back of Saeyoung's chair and he's whirling the hacker around to face him

* "How can you sit there and work while she's suffering?!"

* Saeyoung's face remains blank, but Yoosung saw his eyes narrow slightly, averting his gaze to avoid Yoosung's accusing look

* "Don't make this harder than it already is, Yoos—"

* Yoosung snaps

* Saeyoung's head whips to the side as Yoosung's fist collides with his jaw

* And he falls off his chair, eyes wide

* "I thought you would be the one to protect her!"

* "Seven zero seven, Defender of Justice!"

* "You told us you loved her! You told us you would keep her safe!"

* "MAKE HER HAPPY."

* "I never expected you to be the one to hurt her!"

* Yoosung kneels down in front of him and grabs him by the jacket, pulling him closer, tears streaming down his face

* "Hyung, I trusted you. I was wrong."

* "I can't believe you fooled me too."

* That's when the fragile string tying Saeyoung's emotions together broke

* And pain is evident on his face

* And he's crying too

* "Yoosung…I never…I didn't…Yoosung…I love her."

* Yoosung scoffs

* "You have a funny way of showing it."

* Saeyoung grabs Yoosung's hands, the ones that are clenched into fists as the younger guy clings onto his clothes

* "I never meant to hurt her. I never meant for it to happen. The other woman means nothing to me. She's a co-worker and she saved my life and…it was one night. It was a mistake."

* "It's one night you can never take back."

* Yoosung lets go of Saeyoung and the hacker falls back to the floor

* He gets to his feet and looks at the man he once idolized

* He once wished he could be

* His friend

* "You know what else is a mistake?" he says, looking down at the broken man on the floor

* "Trusting you."

* Yoosung walks to the door, turning his back on Saeyoung

* "Yoosung."

* The vet stops in his tracks

* "…will you tell her I'm sorry?"

* "Will you take care of her for me?"

* "Please."

* Yoosung closes his eyes and bites his lip, shaking his head

* "You don't have to ask me that."

* "I will always be here for her. No matter what."

* "I can't say the same for you."

* Saeyoung is on his feet as well, standing a few feet away from Yoosung

* "Can I ask you one last favor before you go?"

* Yoosung is quiet

* "Can you…can you tell her I still love her? Can you tell her I'd…I'd like to talk to her in person."

* Anger swells in Yoosung's heart

* He turns and glares at the redhead through his tears

* "Saeyoung. You don't deserve her anymore."

* He storms out of the bunker

* Hurt and angry

* Cursing himself for letting MC go

* Cursing himself for making his best friend suffer

* Knowing he would probably tell MC what Saeyoung asked of him when she's ready

* Wishing Saeyoung had never done it

* He loved them both

* He wanted them to be happy

* But for now, he rushes home to her

* For now, he will allow himself to love her

* He's furious with Saeyoung

* But if MC chooses to forgive the man, Yoosung will step back and let her go

* But he will never let Saeyoung or anyone hurt her again

* Yoosung makes a promise to himself

* To always be the man that she can rely on

* To always keep her safe

* To be the man who would make her smile again, if she would take him

* To always be her friend

* Even if it meant watching her be happy in someone else's arms

* As long as she smiles again, he would be happy

* Just let her smile again