McMantle

Rosie is the het ship between Josie McCoy and Reggie Mantle on CW teen mystery drama Riverdale.

Canon
Josie and Reggie hook up in a jingle jangle haze, but continue to flirt the following day as they clean up Pickens Park as punishment for their drugfest. Later on Josie reveals to Cheryl that Reggie has offered her a gig at his Dad's car dealership that pays $5000 — if Josie will allow Reggie to be her escort. Josie clearly seems to be enjoying how hard Reggie is trying to get another shot at spending time with her.

Fandom
AO3

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Trivia

 * Charles Melton (Reggie Mantle) calls the ship McMantle