Riverdale's Camila Mendes just CRACKED IT at a fan for questioning her relationship with Charles Melton

Tell 'em, Cami.

By Susannah Guthrie

Riverdale star Camila Mendes has teed off at a fan on Instagram for suggesting she "looked happier" with ex-boyfriend Victor Houston than she does with current boyfriend, fellow Riverdale star Charles Melton.

Cami and Victor dated on the down-low for only a few months mid-way through this year, but then she found love with Charles, breaking the news to fans with a sweet Instagram post of her and Charles snuggling and the caption, "mine".

Since then, she and Charles have been all over our Insta feeds looking loved up and perfectly content. And while they're not in love on the actual show (Veronica and Archie 4eva), we ship them hard.

Unfortunately, not everyone is about it. One of Cami's so-called "fans" took to Instagram to share a side-by-side shot of Cami and Charles and Cami and Victor, writing: "Sorry but I have to post it. Cami looked happier with Victor."

Big mistake. HUGE.

Cami spotted this post and decided to have a rare candid moment by responding.

"I feel silly responding to this but I also feel the impulse to tell you that you're wrong," Cami wrote. "I'm happier than I've ever been in my life.

"It's absurd to me that you call yourself a fan yet, your entire page is dedicated to disrespecting my relationship and my boyfriend, both of which you clearly know nothing about. Charles and I were on our way to shoot a self tape, which he helped me with all day.

"Literally stopped everything he was doing to help me tape the perfect audition. I was running the lines in my head without even knowing there was a pap taking photos of us. Victor and I were at Comic Con, walking toward a huge line of fans knowing there were cameras pointed at us.

"See the difference? I hope you're young, because that seems to be the only justification for this kind of immaturity."

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Lesson learned.