Southern Sinner by Jessica Peterson

What happens in Vegas stays in Vegas. Until I brought my fake girlfriend home.

When I took a seat next to the gorgeous brunette at the blackjack table, I had no idea it would be the start of the hottest weekend of my life. By day, Stevie and I dominate the casinos of Sin City.
By night, I dominate her in my penthouse suite.
Then my brother Samuel ruins it by asking me to come home for his engagement party.
Because he’s not just getting married. This isn’t a normal celebration for me. His future bride is my “one who got away.” The girl I may or may not still be in love with.
The catch? He wants me to prove I’m over his fiancée before they set a date. So I ask Stevie to double down on our chemistry and pretend to be my girlfriend.
We set our ground rules: lots of sex, plenty of pretend smiles, and no strings.
But we’re not only gambling with the truth. We’re gambling with our hearts.
They say every saint has a past, and every sinner has a future. But Stevie’s past may force us to fold on our future before it’s even begun.