Cherosie

Chosie is the femslash ship between Josie McCoy and Cheryl Blossom on teen mystery drama Riverdale.

Canon
It's not mentioned how long they've been friends, but from what Josie says she's got Cheryl's back whenever, although they really appear more to be a power liaison. Both have strong stata in the high school social hierarchy, and Josie recently joined the cheerleading squad The Riverdale Vixens, likely without an audition, probably due to her relationship with Cheryl. They are both power brokers and live in the spotlight, Josie actually requesting to be the center of attention if she's to stay with the Vixens, while Josie's a bit annoyed at Cheryl wanting to perform at Pop's with The Pussycats, but allows it all the same.

Fanon
Basically these are two Slytherins in alliance