Jealous James Potter FanFiction

Why is it always Regulus?!

Why is it always Regulus?!

M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Characters, Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Minerva McGonagall,
Tags
Angst Slow Burn Betrayal Suicidal Thoughts Protective Siblings Original Character(s) Blood and Injury Hurt/Comfort Post-Traumatic Stress Disorder - PTSD Implied/Referenced Torture Everyone Needs A Hug First Kiss
The Wizarding World was talking about it, the rumours were spreading faster than ever. People will always remember the day the darkest wizard of all time had fallen, the day he was defeated by just a baby.This is the story of the boy who lived,Regulu...
Jealous James!!

Jealous James!!

M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, James Potter, Barty Crouch Jr.
Tags
Marauders One Shot My First AO3 Post Barty Crouch Jr. is a Little Shit Jegulus Sunseeker Starchaser Jealous James Potter regulus is forever an angel anyway jegulus
Maybe he should slit his throat so that way he no longer has a voice to speak to him or he should perhaps gouge his eyes with a spoon that way he would never lay his eyes on Regulus.
James is not a (Common) Trollop

James is not a (Common) Trollop

M/M
Multi
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Lily Evans, Sirius Black/James Potter, Remus Lupin/James Potter, Sirius Black/Remus Lupin/James Potter
Tags
Fluff Getting Together Miscommunication Fluff and Angst Implied Sexual Content Polyamory Marauders Era (Harry Potter) No Smut Everything is Beautiful and Nothing Hurts Jealous James Potter Jealous Remus Lupin BAMF Sirius Black
James and Sirius and Remus have been dancing around things for too long. It's about time that they cleared the air.What better way to do that than a date?James Potter is not a trollop, despite Sirius' assumptions, Lily is the best friend ever, and R...
Code Black

Code Black

M/M
Multi
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black, James Potter, Minerva McGonagall, Dorcas Meadowes, Evan Rosier, Barty Crouch Jr., Pandora Lovegood
Tags
Tension Angst Slow Burn Emotional Hurt/Comfort Pining One Night Stands Regulus Black and Sirius Black Angst Workplace Relationship medical drama Jealous James Potter slowish burn Jealous Regulus Black
Regulus Black’s world is upended when he wakes up next to James Potter after a one-night stand—only to find out James is his mentor at St. Mungo’s. As he navigates his first day as a Healer-in-Training, he’s also forced to confront his estranged brot...
The Year We Were Almost

The Year We Were Almost

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Evan Rosier, Minor or Background Relationship(s), Barty Crouch Jr., Barty Crouch Jr./Evan Rosier
Tags
Slow Burn Friends to Lovers Mutual Pining Idiots in Love Regulus Black and Sirius Black Angst Regulus Black Needs a Hug Jealous James Potter Eventaully flirting disguised as bickering
Regulus Black is used to pretending. Pretending he doesn’t care, pretending he doesn’t feel anything when James Potter looks at him like that. James, meanwhile, is trying (and failing) to ignore the way Regulus and Barty Crouch Jr. seem so close.Betw...
Fire On Fire

Fire On Fire

F/F
F/M
M/M
G
Updated
11.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Dorcas Meadowes, Evan Rosier,
Tags
Sexual Content Happy Ending Regulus Black is Bad at Feelings Everyone Is Gay Alternate Universe - Firefighters Bad Parent Walburga Black Sirius Black & James Potter Friendship Bad Parent Orion Black 9-1-1 AU dorcas and lily are married Jealous James Potter not slow burn
James Potter has been working with 118 since he basically became a firefighter.Regulus Black is a new firefighter at the 118.
I crave to say your name

I crave to say your name

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Dorcas Meadowes, Evan Rosier, Barty Crouch Jr., Pandora Lovegood
Tags
Slow Burn Sexual Tension Regulus Black and Sirius Black Angst Regulus Black Needs a Hug Jealous James Potter Minor Barty Crouch Jr./Evan Rosier we love lily Jealous Regulus Black Regulus Black Gets a Hug same with wolfstar I didn't include Voldy You can think that he doesn't exist
Where James loves to push Regulus' boundaries and Regulus loves to push back every time.Where does it take them? Too far to call it a game anymore apparently.
And I Go Back To December All The Time

And I Go Back To December All The Time

F/F
M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Gilderoy Lockhart, Pandora Lovegood,
Tags
Slow Burn Mutual Pining Angst with a Happy Ending Angst and Hurt/Comfort Happy Ending POV Multiple Second Chances Alternate Universe - Muggle Inspired by Taylor Swift Regulus Black & Remus Lupin Friendship Remus Lupin Needs a Hug Regret
Remus misses winter, not for the snow or the twinkling lights, but for the memory of a man with stormy grey eyes and black hair who shattered his heart and froze his world with a single choice. The days keep moving forward, but he’s still stuck in a...
you just won't admit it that you're smitten

you just won't admit it that you're smitten

Multi
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Other Character Tags to Be Added, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Dorcas Meadowes, Evan Rosier,
Tags
Other Additional Tags to Be Added Alternate Universe - Muggle Regulus Black & Sirius Black Have a Good Relationship Regulus Black is Bad at Feelings Alternate Universe - No Voldemort Friends With Benefits Regulus Black is a Little Shit Barty Crouch Jr. is a Little Shit Desi James Potter James Potter is So Whipped Jealous James Potter Neighbors
“Maybe you love him.”Regulus sputtered out protests immediately. Something ached, something he always felt when James Potter was as little as mentioned. “No, you don’t understand. I loathe him so ardently that the hatred swirls around in the pit of m...
The other woman

The other woman

F/M
M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Sirius Black/Remus Lupin, James Potter/Lily Evans Potter, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon
Tags
Fluff and Angst Jealous James Potter Jealous Remus Lupin sirius and lily start dating (although they don't like each other)
Sirius loves Remus, and Remus loves Sirius it's clear as daylight for everybody, James thinks, but the problem is that Sirius goes on thousands of dates, and for the first time in years, he brings one home. Not only is she the prettiest girl James ha...
Operation get James out alive

Operation get James out alive

G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, James Potter/Lily Evans Potter, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Dorcas Meadowes, Marlene McKinnon/Dorcas Meadowes, Evan Rosier, Barty Crouch Jr.,
Tags
Chaotic Barty Crouch Jr. Fake/Pretend Relationship French Regulus Black Dysfunctional Black Family (Harry Potter) French Black Family (Harry Potter) Pandora Lovegood and Evan Rosier are Siblings Jealous James Potter Protective Dorcas Meadowes Jealous Evan Rosier
Regulus Black has had a crush on James Potter since his third year. Now he's in his sixth year. Three years of pining is far to long in his opinion. so when Barty asks regulus to fake date him to try and make Evan jealous, he accepts hoping it'll dis...
give me a chance (for real this time)

give me a chance (for real this time)

F/F
M/M
Multi
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Other Character Tags to Be Added, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Dorcas Meadowes, Evan Rosier, Minor or Background Relationship(s),
Tags
Angst Slow Burn Other Additional Tags to Be Added Bickering Miscommunication Humor Fluff and Angst Domestic Fluff Enemies to Friends to Lovers Forced Proximity Panic Attacks Alternate Universe - Muggle
Regulus has never liked James, not when Sirius told him about that new friend he made while Regulus was away visiting their grandma in Rome, not when he met James personally once he got back, not when James and Sirius spent every single afternoon tog...
handgun

handgun

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Marlene McKinnon, Dorcas Meadowes, Evan Rosier, Barty Crouch Jr.
Tags
Fluff Angst Everyone Is Gay Regulus Black is a Little Shit Regulus Black Needs a Hug Desi James Potter Modern Marauders (Harry Potter) Jealous James Potter Assassin Regulus Black Barista James Potter loosely based on the hot guy who shot United Healthcare CEO like that’s our regulus
Regulus Black hates his brother. He hates him with every fibre of his being. He hasn’t seen him in ten years and has no desire to do so. That being said, when he heard the CEO of some huge pharmaceutical company ask the minister to give a “shoot at s...
The Golden Boy Gets What He Wants

The Golden Boy Gets What He Wants

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Marlene McKinnon, Sirius Black/James Potter
Tags
Getting Together Jealousy Marauders Era (Harry Potter) Feelings Realization Oblivious James Potter Jealous James Potter AI-Generated Text prongsfoot - Freeform Smitten Sirius Black Confident James Potter Smitten James Potter
James thinks he is entitled to Sirius's attention... Until he doesn't.
The Pet Name Problem

The Pet Name Problem

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Sirius Black/James Potter
Tags
Jealousy Marauders Era (Harry Potter) Feelings Realization Pet Names Jealous James Potter Harry Potter is Bad at Feelings Flirty Sirius Black Smitten James Potter
Sirius has taken upon calling James 'Pet' and well, James... He's not doing okay.
Not-So-Secret Admirer

Not-So-Secret Admirer

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Sirius Black/James Potter
Tags
First Kiss Flowers Marauders Post-Hogwarts Feelings Realization Secret Admirer Jealous James Potter AI-Generated Text James Potter is Bad at Feelings
Someone starts sending flowers to Sirius and James is losing his mind over it.
Claimed

Claimed

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Sirius Black/James Potter
Tags
Getting Together Possessive Behavior Misunderstandings Marauders Era (Harry Potter) Hogwarts Dorks in Love Jealous James Potter AI-Generated Text James Potter is Bad at Feelings Insecure James Potter Sirius Black & Remus Lupin Friendship
James can be quite territorial, especially when it comes to Sirius.
Sharing

Sharing

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans, Sirius Black/James Potter
Tags
Jealousy Marauders Era (Harry Potter) Feelings Realization Sirius Black is a Little Shit Remus Lupin is So Done Jealous James Potter James Potter is a Little Shit AI-Generated Text Sirius Black & Lily Evans Potter Friendship
James is an only child, so naturally he's not very familiar with the concept of sharing. Let alone sharing Sirius' attention.
To lose is to have loved

To lose is to have loved

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew
Tags
Angst Secret Relationship Pining Hurt No Comfort POV James Potter Regulus Black and Sirius Black Angst Morally Grey Regulus Black Jealous James Potter James Potter is a Little Shit Minor Sirius Black/Remus Lupin Regulus is doing the best he can If all goes to plan this will not end happy but will still be beautiful nonetheless
As James is returning to Hogwarts after holiday with a heavy heart and hearing devastating news from Sirius he tries to stay positive by reminiscing on the happy accident that changed the trajectory of his life.
all he knew was obsession

all he knew was obsession

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Harry Potter, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Regulus Black & Sirius Black, Sirius Black & James Potter, Regulus Black & Remus Lupin, Sirius Black & Harry Potter, Remus Lupin & James Potter
Tags
Obsessive Behavior James Potter is Not Okay Jealous James Potter Dark Regulus Black Dark James Potter Overprotective Sirius Black Protective James Potter Baby Harry STOP!!! James Potter is Harry Potter's Parent james potter has problems James Potter does NOT listen to taylor swift
james knew he shouldn't be having these thoughts he knew.but he Couldn't stop he tried. seeing his love holding his baby there baby.he Couldn't Wouldn't change he would do anything for them. or james Obsesses over regulus, and gets a little jealous (...