if you come to me, on this day, the day of my birthday, and tell me that james potter did not enter his mate, sirius black, into a dog show competition, made it to the final round, and then was beaten by narcissa black’s poodle… i want you off my dash, and off my blog this instant
Of course, Lily hated Sirius’ guts at first. “He’s James Potter’s best friend, of course he’s awful,” she tells her friends back in first year.
She has also heard stories of hows his family is so anti-muggle and she does not like it. But then around Halloween she is out of bed at night because she desperately needs a library book and she also likes to explore the castle (but never gets caught like the Marauders do).
She runs into Bellatrix, Malfoy and the other Slytherins and she is terrified but she holds her ground and when they are about to hex her Sirius suddenly shows up from around the corner and hisses something like “Back off Bella!”
It takes them a few days to warm up to each other, but eventually they become friends much to James Potter’s chagrin. “How did you become friends with her, Sirius?” (”Maybe I don’t tease her, James”)
But he does all the time, and Lily is constantly coming up ways to tease him back, and their prank wars last for several weeks.
Once Lily’s entire collection of books of Charms was found hanging from the Quidditch Goalposts.
As a result, Lily hexes him to say “Minerva McGonagall is my muse and love” over and over earning him four months of detention
Whenever she raises her hand in class, he high fives her, and when he’s not there the other Marauders do. Yes I believe in this headcanon.
They are the biggest Quidditch fans in Hogwarts history. During the matches, Lily and Sirius paint their faces gold and scream themselves hoarse
They braided each other’s hair, Sirius being more gifted at it than Lily
Lily starting to meddle when she realizes Sirius likes Remus
She frequently hatches plans with ‘Potter’, albeit reluctantly, until the day she realizes that she looks forwards to these silly plans to hang out with ‘James’.
One day Sirius is very upset about Regulus and Lily comforts him. “I have a sister, too, and we’re not very close. I miss her terribly…”
When Sirius has the falling out with the Marauders over the Snape Prank, Lily is his only friends. She realizes what he has done (she knew that Remus was a werewolf since first year) and is angry, but she still sticks with him
Lily is head girl, and when Sirius’ uncle Alphard dies, she lets him skive off classes and makes excuses for him
After graduation, all the Marauders and Lily rent out a flat together, and it feels like Lily and Sirius replaced each other’s siblings. It feels like family.
Which is why it is so heartbreaking when they have to go into hiding and leave the little home they made behind