Looking for a book about cheating

Hello,

I'm searching for a book to read that's about a woman cheating on her husband. Preferably, it's with one of her coworkers or an acquaintance, and she ends up leaving her husband for said acquaintance/coworker.

To be clear, I'm not searching for a specific book, just something new to read. I have not read many romance books or any book of this kind, so suggest away.