Chaos at Prescott High by C M Stunich

There's one gang you don't piss off at Prescott High, not unless you want them to destroy you.
The Havoc Boys.
My enemies turned friends turned lovers.
These boys have never been saints, but this war that's brewing is resurrecting their inner demons.
Once upon a time, I was their target. This time, I'm calling the shots.
Senior year is my year.
This year, I'm going to bring down my enemies.
This year, I'm going to run my tongue along the blade of vengeance and taste blood.
The Havoc Boys are mine, and we were here first.
You don't mess with a Havoc Girl without paying the price.
You don't start a rebellion without a little bloodshed.
My boys and I don't mind using two wrongs to make a right—I just hope our brewing obsession with one another doesn't kill us all first.
CHAOS AT PRESCOTT HIGH is a 150,000 word mature high school/new adult romance with enemies-to-lovers/love-hate themes. It has brief flashbacks of past bullying incidents as well as foul language and sexual scenes; any sex featured is consensual. This is a reverse harem novel, meaning the main character has more than one love interest. This is book two of three in the series.