Her Forbidden Twin Lovers

I’m not supposed to be sleeping with my professor. He's a mystery to me. He's controlling, demanding, and he has me wrapped around his little finger. Anything he wants, I'll give it to him. The hours we share together aren't about love. It's just sex. Hot, dirty, passionate sex. It was never supposed to be anything more than that. Now I’m in over my head. He’s not who I thought he was...In fact...There’s more than one of him.