Best Friend's Wife and Mother (Sweet Betrayal). Sweet Betrayal

Sam and Jacob had always been an odd pair. Sam, the unabashed sex addict, thrived on the thrill of the chase and the ecstasy of conquest. Jacob, on the other hand, was more reserved, his interests lying in the stability of finance rather than the capriciousness of carnal desires. Yet, their friendship had endured, their business thriving under their complementary skills. Their latest venture was a high-end club, a playground for the rich and the restless.
It was here that Sam's predatory instincts were honed to perfection. He schmoozed with clients, his charm as intoxicating as the top-shelf liquor they served. But it was Kim, Jacob's fiancée, who consumed his thoughts. Kim's presence at the club was a siren's call to Sam. She moved with a grace that belied the power she held over him. Her laughter, a melodic sound that seemed to echo directly in his groin, was a potent aphrodisiac.
She knew the effect she had on him, and her teasing was a game they both played with fervor.