Mind games
(Book)

"Arden sells memories. Whether it's becoming homecoming queen or studying for that all important test, Arden can hack into a classmate's memories and upload the experience for you just as if you'd lived it yourself. Business is great, right up until the day Arden whites out, losing fifteen minutes of her life and all her memories of the boy across the school yard. The boy her friends assure her she's had a crush on for years. Arden realizes that her own memories have been hacked, but they haven't just been stolen and shared; they've been removed. And she's not the only one: her mysterious crush, Sebastian, has lost ALL of his memories. But how can they find someone who has the power to make them forget everything they've learned?"--Amazon.