Why won't you take me serious?

Harry Potter - J. K. Rowling
M/M
G
Why won't you take me serious?
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Regulus Black & Sirius Black, Minor or Background Character(s)
Tags
Fluff Marauders Era (Harry Potter) Regulus Black & Sirius Black Have a Good Relationship Alternate Universe - No Voldemort Established Sirius Black/Remus Lupin French Regulus Black French Sirius Black Latino James Potter POV Sirius Black no beta we drown like regulus Walburga and orion are actually decent parents they are not abusive 5+1 fanfic Sirius and James are a marriage and Regulus and Remus are the mistresses
Summary
When James and Regulus tell Sirius that they are dating he doesn't believe them for a second and thinks they are trying to fool him. At least that's what he thinks until he starts seeing them together around the castle.or5 times Sirius doesn't believe his brother and his best friend are in a relationship + 1 time he does.

Chapters