Adam’s Obsession by Sabrina York

Hopelessly shy and utterly repressed, Katherine Hart slakes her taboo desires online, where the anonymity allows her to indulge without embarrassment. Her virtual lover, Savage, is willing to meet her every need, especially once he discovers her naughty little secret—more than anything, she craves a masterful man. Fortunately, Savage is just that. And then some.

When Adam Trillo—aka Savage—discovers the shameless, erotic woman he’s been tangling with online is actually his demure coworker, he’s determined to seduce her in real life. He longs to release the wild Kat he knows lurks just below the surface. With a relentless mix of domination and persuasive charm, he draws her into his web until she’s helpless to deny their mutual passion.

Particularly when she’s tied to his bed.