"Friends with benefits, stepbrother with benefits, what's the difference?"

"Um, we're not even friends, Ethan?"

Rule number one - It's only supposed to last for a week....

Ethan is a cocky, arrogant jerk. He's always been that way. I'll never understand why girls trip over themselves just to be with him. Don't they realize he's going to ditch them in a week?

Yes, he can be nice when he feels like it. It's true that he's ridiculously attractive, too. It's not like I want to stare at him when he walks around shirtless, but it's hard not to notice someone with a body made of rock-hard sculpted muscle and sin. He's got that panty-melting bad boy smile that makes you want to....

Did I mention he's my stepbrother? Ick.

What? You think I'm falling for him? Nope! It's impossible.

There's only one problem...I might have accidentally, um...it was just one night, alright? One really good night. Panties? Yup, they're melted.

It was a mistake, it doesn't mean anything.

Sorry, there's two problems. Did I mention our parents are away and we're stuck home alone together for a week?

I'm the responsible one. The good girl with perfect grades. And I'm trapped for a week with a bad boy who showed me what it's like to give in to my wild side.

What's the worst that can happen?