Deadly Games by Lisa Helen Gray

When Willow moves across the country to attend Whithall University, she has no regrets. She’s with her sister from another mister, her boyfriend, and her best friend. Life couldn’t get any better.
But fate has other plans for her.
There’s a monster prowling the corridors of Whithall, and Willow doesn’t see it until it has her in its grasp.
She gets sucked into a world of deadly games. Her memories might have been stolen from her, but she will not stop until she uncovers the truth.
Three boys…
One destroys her.
One breaks her.
One becomes her everything.