Obsession by Vivian Wood

Secrets can kill.
Harper wanted Sean to dominate her, to degrade her… and she loved every second of it. Every hot, gasping-for-breath, clenching-the-sheets moment. She loved to have him looming over her, dictating her every move. She got off on it.
But now it’s too real. Their relationship has gotten complicated and dark, fast.
For Sean, Harper is more than just a good f*ck. She’s quickly becoming an obsession. When she pulls him from the fire yet again, he can’t pretend that she’s not the center of his world.
But Harper’s got secrets too, and hers are twice as deadly. When she finally starts to unravel, they will both have to find a way to save themselves — and each other — if they want to stay together.