Layne, Lauren. Central Park Pact series

"For as long as she can remember, Bronx-born Naomi Powell has had one goal: own one of the ritzy Upper East Side homes where she used to watch her mom work as a housekeeper. Now a sassy CEO of one of the biggest fashion jewelry empires in the country, Naomi has exactly what she wants, but she's learning that it'll take more than the right address to make Manhattan's elite stop treating her like an outsider. The worst of them all is Oliver Cunningham, her new neighbor, and the grown son of the very family Naomi's mother used to work for. Oliver used to torment Naomi when they were children, and as a ridiculously attractive adult, he's tormenting her in entirely different ways. Naomi and Oliver find themselves engaged in a sensual battle-of-wills that will either consume or destroy them.."--