Binary Boyfriends AO3 Feed

A depository of Binary Boyfriends fics for your nerdy needs. 🤓

[ao3feed-binarybfs]

ao3feed-binarybfs is closing.

Hey guys.

I'd like to formally announce that, due to my inability to dedicate time to fix IFTTT's automation settings (which for some odd reason keeps duplicating RSS entries), I'm making the tough decision to close this archive. This archive has amassed a great chunk of wonderful reads during its 3-year run, but things unfortunately have to come to an end. ao3feed-samtory will also stop updates for this exact reason.

I'll be queueing all remaining entries, all of which I will need to manually go through editing in the post creator, until everything is sorted out so that I can officially close this archive.

That said, in the event someone wants to take over this archive, please do DM me or send me an ask here! You have until the end of October 2025 to claim this sideblog.

Thanks and see you around, Corny

[ao3feed-binarybfs]

And All You Want Is Sleep

by PimpedOutGreenEars

read it on AO3 here

When Hawk can't sleep, he gets desperate. He pulls out Demetri's shirt and he imagines what would happen if he went to his house.

Words: 3017, Chapters: 1/1, Language: English

Fandoms: Cobra Kai (TV)

Rating: Teen And Up Audiences

Warnings: No Archive Warnings Apply

Categories: M/M

Characters: Eli "Hawk" Moskowitz

Relationships: Demetri Alexopoulos/Eli "Hawk" Moskowitz

Additional Tags: brief suicide mention, it's just one line, But Hawk is for sure having a sad boi night, Takes place after the arm break

[ao3feed-binarybfs]

forever

by transvalkilmer

read it on AO3 here

My secret Santa gift for Pimpedoutgreenears!

Eli starts wearing Demetri’s clothes while staying with him for break and it drives Demetri a little crazy because of his feelings for Eli.

Words: 3997, Chapters: 1/1, Language: English

Fandoms: Cobra Kai (TV)

Rating: General Audiences

Warnings: No Archive Warnings Apply

Categories: M/M

Characters: Demetri Alexopoulos, Eli "Hawk" Moskowitz, Miguel Diaz (Cobra Kai), Samantha LaRusso, Bert (Cobra Kai), Moon (Cobra Kai)

Relationships: Demetri Alexopoulos/Eli "Hawk" Moskowitz

Additional Tags: Fluff, Just a little angst, Sharing Clothes, Sharing a Bed, Christmas Party, Golf N' Stuff (Karate Kid), takes place before they go to college

[ao3feed-binarybfs]

forever

by transvalkilmer

read it on AO3 here

Eli is wearing Demetri's clothes after staying with him over break and it drives Demetri a little crazy because of his feelings for him

Words: 3998, Chapters: 1/1, Language: English

Fandoms: Cobra Kai (TV)

Rating: Teen And Up Audiences

Warnings: No Archive Warnings Apply

Categories: M/M

Characters: Demetri Alexopoulos, Eli "Hawk" Moskowitz, Miguel Diaz (Cobra Kai), Samantha LaRusso, Moon (Cobra Kai)

Relationships: Demetri Alexopoulos/Eli "Hawk" Moskowitz

Additional Tags: Fluff, Jealousy, Christmas Party, Sharing Clothes, Sharing a Bed, Cuddling & Snuggling

[ao3feed-binarybfs]

Be grateful for compassion (which you don't deserve)

by Pietro_okahali

read it on AO3 here

Eli's vision of everything

Words: 909, Chapters: 1/1, Language: English

Series: Part 3 of Take Mercy (That You Don't Deserve)

Fandoms: Cobra Kai (TV)

Rating: Mature

Warnings: Graphic Depictions Of Violence

Categories: Other

Characters: Eli "Hawk" Moskowitz, Demetri Alexopoulos, Robby Keene, Miguel Diaz (Cobra Kai), Samantha LaRusso, Tory Nichols, Kenny Payne, Anthony LaRusso, Terry Silver, John Kreese, Johnny Lawrence, Daniel LaRusso, Kim Da-Eun (Cobra Kai), Chozen Toguchi, Kwon Jae-Sung, Yoon Do-Jin, Axel Kovacevic

Relationships: Demetri Alexopoulos/Eli "Hawk" Moskowitz, Miguel Diaz & Eli "Hawk" Moskowitz, Samantha LaRusso & Eli "Hawk" Moskowitz, Miguel Diaz & Robby Keene, Robby Keene & Eli "Hawk" Moskowitz, Anthony LaRusso/Kenny Payne, Kim Da-Eun & Kwon Jae-sung, Yoon Do-Jin & Kwon Jae-sung, Axel Kovacevic & Kwon Jae-sung

Additional Tags: Angst, Canon-Typical Violence, Suicidal Thoughts, Suicide Attempt, This is non-canon

[ao3feed-binarybfs]

Metal and Citrus.

by LifesConstantDebate

read it on AO3 here

Eli and Demetri both become vampires. Eli isn't handling it very well and goes with Demetri to their shared (fake) gravesite to talk about his feelings. Marked for heavy themes/topics and mental health issues.

Words: 1545, Chapters: 1/1, Language: English

Fandoms: Cobra Kai (TV)

Rating: Teen And Up Audiences

Warnings: Major Character Death

Categories: M/M

Characters: Demetri Alexopoulos's Mother, Eli "Hawk" Moskowitz, Eli "Hawk" Moskowitz's Mother, Demetri Alexopoulos

Relationships: Demetri Alexopoulos & Eli "Hawk" Moskowitz, Demetri Alexopoulos/Eli "Hawk" Moskowitz, Eli moskowitz & his mother

Additional Tags: Character Turned Into Vampire, Gay, Vampires, Angst, Suicidal Thoughts, LGBTQ Themes, Blood Drinking, Comfort, Late Night Conversations, Loss of Parent(s), Boys In Love, Mental Anguish, gravestones

[ao3feed-binarybfs]

i knew it, i know you

by emloafs

read it on AO3 here

“What are you doing here?” Demetri finally manages. His voice sounds a little strangled, but the question comes out bluntly and a bit harsh.

“Uh,” Eli starts, glancing around, and letting out a confused laugh. “Getting coffee? What are you doing here?” he teases.

Demetri really doesn’t have time for this. He rolls his eyes. “Not here. What are you doing in Boston?” he demands.

Eli’s playful expression falls. He furrows his eyebrows. “I live here.”

Or, the December 19th house fight never happened, Demetri and Eli never made up in high school, and they meet again in college in the most romantic city in the world… Boston.

Words: 7274, Chapters: 1/5, Language: English

Fandoms: Cobra Kai (TV)

Rating: Mature

Warnings: No Archive Warnings Apply

Categories: M/M

Characters: Demetri Alexopoulos, Eli "Hawk" Moskowitz, Original Characters, but they're so minor - Character, Miguel Diaz (Cobra Kai), always has to make an appearance, Samantha LaRusso

Relationships: Demetri Alexopoulos/Eli "Hawk" Moskowitz

Additional Tags: Enemies to Lovers, Childhood Friends, Childhood Memories, Alternate Universe - Canon Divergence, Alternate Universe - College/University, Apologies, Angst, Fluff, Fluff and Angst, there is one spicy part but nothing too explicit, you can skip it, Binary Boyfriends (Cobra Kai), Cobra Kai Season 3, Drinking, Partying, no beta we die like men, Friends to Lovers, Enemies to Friends to Lovers

[ao3feed-binarybfs]

I just want you, I'm sorry

by HawkDem8

read it on AO3 here

Almost a year after Eli (Hawk) broke Demetri's are Eli comes by to apologize..will Demetri accept?

Words: 911, Chapters: 1/1, Language: English

Fandoms: Cobra Kai (TV)

Rating: Not Rated

Warnings: Creator Chose Not To Use Archive Warnings

Categories: M/M

Characters: Demetri Alexopoulos, Eli "Hawk" Moskowitz

Relationships: Demetri Alexopoulos/Eli "Hawk" Moskowitz

Additional Tags: Binary Boyfriends (Cobra Kai)

[ao3feed-binarybfs]

Take the Time (That You Don't Deserve)

by Pietro_okahali

read it on AO3 here

Little thoughts of the characters after the "accident".

Words: 661, Chapters: 1/1, Language: English

Series: Part 2 of Take Mercy (That You Don't Deserve)

Fandoms: Cobra Kai (TV)

Rating: Not Rated

Warnings: Graphic Depictions Of Violence

Categories: F/F, F/M, M/M

Characters: Eli "Hawk" Moskowitz, Demetri Alexopoulos, Miguel Diaz (Cobra Kai), Robby Keene, Tory Nichols, Samantha LaRusso, Kim Da-Eun (Cobra Kai), Kwon Jae-Sung, Yoon Do-Jin, Axel Kovacevic, Zara (cobra kai)

Relationships: Demetri Alexopoulos & Miguel Diaz & Robby Keene & Samantha LaRusso & Eli Moskowitz & Tory Nichols, Demetri Alexopoulos/Eli "Hawk" Moskowitz, Miguel Diaz & Eli "Hawk" Moskowitz, Miguel Diaz & Robby Keene, Kim Da-Eun & Kwon Jae-sung, Kwon Jae-sung & Yoon Do-jin

Additional Tags: Angst, Canon-Typical Violence, Eli needs a hug, dealing with errors, changed POV

[ao3feed-binarybfs]

my undying love, i hold it like a grudge

by achillesheeI

read it on AO3 here

“Dem, please. I don’t know what else I can say.”

The boy pretended to look uninterested, not moving his eyes, but he snapped unhappily anyway. “You can say ‘you were right, Demetri. Like usual. I should have applied to MIT like we had planned to do together since we were twelve’.”

“I’m not going to say that.”

“Why?” Demetri swivelled around finally, tugging out his headphones, arms in the air in his usual melodramatic fashion. “Why won’t you say that? It’s all true!”

“I don’t care if it’s true, Demetri! I don’t need you putting words in my mouth!”

“I’ll put something in your mouth!” He fumed, and the words dropped from Eli’s tongue instantly. Demetri’s brain seemed to catch up to his mouth, and his eyes widened at his own innuendo-threat amalgamation that he’d spat at his best friend. “That is not what I meant.”

“What else would that mean?”

“Shut up, Hawk. My mouth was just moving too fast-”

“What’s new there?”

Words: 2000, Chapters: 1/1, Language: English

Fandoms: Cobra Kai (TV)

Rating: General Audiences

Warnings: No Archive Warnings Apply

Categories: M/M

Characters: Demetri Alexopoulos, Eli "Hawk" Moskowitz, Robby Keene (mentioned), Miguel Diaz (mentioned)

Relationships: Demetri Alexopoulos/Eli "Hawk" Moskowitz

Additional Tags: canon compliant until like s6e7 ish, mentioned yasmetri, what should've happened, Love Confessions, Sexual innuendos, binary boyfriends bickering, canon compliant petty fucking insults, unresolved feelings from s3

[ao3feed-binarybfs]

Take the Mercy (That You Don't Deserve)

by Pietro_okahali

read it on AO3 here

What if Eli took the knife?

What if his anger mixed with madness?

What if he was born to be a monster?

Words: 1390, Chapters: 1/1, Language: English

Series: Part 1 of Take Mercy (That You Don't Deserve)

Fandoms: Cobra Kai (TV)

Rating: Mature

Warnings: Graphic Depictions Of Violence, Major Character Death

Categories: F/F, F/M, M/M

Characters: Eli "Hawk" Moskowitz, Samantha LaRusso, Tory Nichols, Demetri Alexopoulos, Miguel Diaz (Cobra Kai), Robby Keene, Kim Da-Eun (Cobra Kai), Kwon Jae-Sung, Yoon Do-Jin, Axel Kovacevic

Relationships: Demetri Alexopoulos/Eli "Hawk" Moskowitz, Miguel Diaz & Eli "Hawk" Moskowitz, Robby Keene & Eli "Hawk" Moskowitz, Samantha LaRusso & Eli "Hawk" Moskowitz, Kwon jae-sung/Robby keene, Kwon Jae-sung/Tory Nichols, Kwon Jae-Sung/Axel Kovacevic, Kwon Jae-sung & Yoon Do-jin

Additional Tags: Angst, Canon-Typical Violence, Attempted Murder, Minor Character Death, Eli losing his mind

[ao3feed-binarybfs]

Binary Boyfriends

by Anonymous

read it on AO3 here

What if Eli and Demetri had been dating since before the canonical events of Cobra Kai?

Words: 2062, Chapters: 1/?, Language: English

Fandoms: Cobra Kai (TV)

Rating: Mature

Warnings: Creator Chose Not To Use Archive Warnings

Categories: F/F, F/M, M/M

Characters: Eli "Hawk" Moskowitz, Demetri Alexopoulos, Miguel Diaz (Cobra Kai), Johnny Lawrence, Aisha Robinson, Samantha LaRusso, Tory Nichols, Robby Keene, John Kreese, Terry Silver, Bert (Cobra Kai), Chris (Cobra Kai), Anthony LaRusso, Daniel LaRusso, Amanda LaRusso, Carmen Diaz (Cobra Kai), Rosa Diaz (Cobra Kai), Mitch (Cobra Kai), Kenny Payne, Kyler Park, Brucks (Cobra Kai), Stingray (Cobra Kai), Nathaniel (Cobra Kai)

Relationships: Demetri Alexopoulos/Eli "Hawk" Moskowitz, Miguel Diaz & Eli "Hawk" Moskowitz, Demetri Alexopoulos & Miguel Diaz & Eli "Hawk" Moskowitz, Johnny Lawrence & Eli "Hawk" Moskowitz, Miguel Diaz & Johnny Lawrence, Miguel Diaz/Samantha LaRusso

Additional Tags: Soft Eli "Hawk" Moskowitz, Alternate Universe - Canon Divergence, Cobra Kai Season 1, Cobra Kai Season 2, Cobra Kai Season 3, Cobra Kai Season 4, Cobra Kai Season 5, Self-Hatred, Self-Esteem Issues, Underage Drinking, Canon-Typical Violence, Eli "Hawk" Moskowitz Needs a Hug, Demetri Alexopoulos Needs a Hug, Hurt/Comfort, Trauma

[ao3feed-binarybfs]

only twenty minutes to sleep, but you dream of some epiphany

by iwanttowatchwysteriagrow

read it on AO3 here

What do you do when you ruin everything with your best friend and put all of your other friends in danger? Well, you pick up a conveniently-placed knife with the hope of redeeming yourself, of course!

Or, what if Hawk was the one to pick up the knife instead of Kwon? What if he was the one to completely lose it?

Words: 2111, Chapters: 1/1, Language: English

Fandoms: Cobra Kai (TV)

Rating: Teen And Up Audiences

Warnings: Graphic Depictions Of Violence, Major Character Death

Categories: M/M

Characters: Eli "Hawk" Moskowitz, Demetri Alexopoulos, Kwon Jae-Sung, Robby Keene, Miyagi-Do Students, Cobra Kai Students, Sekai Taikai Competitors

Relationships: Demetri Alexopoulos/Eli "Hawk" Moskowitz, Demetri Alexopoulos & Eli "Hawk" Moskowitz, Eli "Hawk" Moskowitz & Kwon Jae-Sung

Additional Tags: Angst, Hurt/Comfort, Fighting, Blood, Eli goes a little insane, Oops, Author Is Sleep Deprived, The Author Regrets Nothing, purposely ambiguous ending, it SAYS major character death but like nothing is REALLY confirmed, The Author Regrets Everything, Song: epiphany (Taylor Swift), someone take away my writing priveledges, Implied/Referenced Self-Harm, very subtle though, Weapons, that damn knife

[ao3feed-binarybfs]

Sleep and I await for you

by Woopdeewoo

read it on AO3 here

Demetri hasn't been sleeping. Everyone could tell. Each step he took seemed to drag as if he were wading through deep mud, and dark shadows under his eyes spoke of too many nights waiting for rest that never came.

Hawk was on a mission to get him to sleep, but first he had to get Demetri to actually talk to him.

Or Fix it fic where Demetri and Eli actually talk about their feelings instead of him just instantly forgiving Eli for everything.

Words: 2273, Chapters: 1/1, Language: English

Fandoms: Cobra Kai (TV)

Rating: General Audiences

Warnings: No Archive Warnings Apply

Categories: M/M

Characters: Eli "Hawk" Moskowitz, Demetri Alexopoulos, Miguel Diaz (Cobra Kai), Samantha LaRusso

Relationships: Demetri Alexopoulos/Eli "Hawk" Moskowitz

Additional Tags: Emotional Hurt/Comfort, Hurt/Comfort, Angst, Cuddling & Snuggling, POV Eli "Hawk" Moskowitz, Arguing, Post-Season/Series 03, Alternate Universe - Canon Divergence, Demetri Alexopoulos & Samantha LaRusso Friendship, Eli "Hawk" Moskowitz & Miguel Diaz Friendship

[ao3feed-binarybfs]

Best way to make up

by Kittykat_LoverofFandoms

read on AO3 here

The tension finally breaks between these two karate fighters.

Words: 1894, Chapters: 1/1, Language: English

Fandoms: Cobra Kai (TV)

Rating: Explicit

Warnings: No Archive Warnings Apply

Categories: M/M

Characters: Demetri Alexopoulos, Eli "Hawk" Moskowitz

Relationships: Demetri Alexopoulos/Eli "Hawk" Moskowitz

Additional Tags: Plot What Plot/Porn Without Plot, Anal Fingering, Anal Sex, Blow Jobs, Rough Sex, Table Sex

[ao3feed-binarybfs]

I Missed You

by HJolly

read it on AO3 here

What if Hawk hadn't broken Demetri's arm?

Words: 5553, Chapters: 2/2, Language: English

Fandoms: Cobra Kai (TV)

Rating: General Audiences

Warnings: Creator Chose Not To Use Archive Warnings

Categories: M/M

Characters: Demetri Alexopoulos, Eli "Hawk" Moskowitz

Relationships: Demetri Alexopoulos/Eli "Hawk" Moskowitz

[ao3feed-binarybfs]

Change

by Anonymous

read it on AO3 here

Demetri hated change. Especially when it was in regards to something or someone important to him. So when Eli started changing, it bothered him.

Words: 17129, Chapters: 7/7, Language: English

Fandoms: Cobra Kai (TV)

Rating: General Audiences

Warnings: Creator Chose Not To Use Archive Warnings

Categories: M/M

Characters: Demetri Alexopoulos, Eli "Hawk" Moskowitz, Samantha LaRusso, Tory Nichols

Relationships: Demetri Alexopoulos/Eli "Hawk" Moskowitz, Miguel Diaz & Eli "Hawk" Moskowitz, Demetri Alexopoulos & Miguel Diaz & Robby Keene & Samantha LaRusso & Eli Moskowitz & Tory Nichols, Demetri Alexopoulos & Samantha LaRusso