Please Don't Go by Mooney, Kelly

Sophie Gerrard is a senior, and doing her spring semester abroad in London, to be with Ethan. Everything is perfect, until Ethan's world shatters, and he spirals out of control. She wants to be the one to help him, but Ethan was never one to accept help easily. With Peter's assistance, can Sophie save Ethan for a second time, or is it the end of their perfect relationship?