SOLVED. YA Thriller/Suspense. 3 teens who are trying to figure out the identity of a person who is threatening to out the girls' secrets unless the follow his notes and rules. [s]

[Maile]

its about 3 teens- one mean girl who is having a forbidden relationship with her stepbrother, but the step brother has feelings for another OC Sydney. The SB likes photography. Anyway, there is a stalker who is threatening to out the 3 girls' secrets unless they follow his rules. One of them is a dancer who had to sabotage another contestant, or the stalker would release a secret. It's set in a coastal town, because there was a beach.

I read this book around 2014-15. The last book came out around 2015-16 as well. One of books had a hot pink cover. I'm pretty sure it was the first one, though.
(view spoiler)[Sydney's best friend, it's a guy, was the stalker (hide spoiler)]

[Juels]

Secrets and Lies by Jacqueline Green?

[Maile]

YES THANK YOU SO MUCH

[Juels]

You're welcome.