Not That Into You by Sarah Kimberly

She thinks he’s a playboy. He thinks she’s uptight. Will they be able to pull off a fake relationship?
Cameron Stanhope is a fun-loving charmer who’s used to getting his own way.
Which is why Monica Matthews can’t stand him.
While his life seems easy, she has to work twice as hard just to make ends meet. And even though he’s her roommate’s best friend, Monica’s certain he’s all style over substance.
Which is fine with Cameron, since he wants nothing to do with Monica. As far as he’s concerned, the graphic designer desperately needs to loosen up and have a little fun.
But when their usual sparring is mistaken for a lover’s quarrel, Cameron’s expected to bring his “girlfriend” to the Hamptons to meet his family. Though normally he’d laugh it off, there’s more on the line than his family’s expectations.
Now Cameron has to convince Monica to pose as his girlfriend even though they’re more likely to trade barbs than whisper sweet nothings.
But can Monica trust Cameron’s intentions when she no longer trusts her own feelings?
Not That Into You is a steamy, enemies to lovers romantic comedy with a fake relationship and snarky banter. It’s a standalone book that’s the second in the Park Avenue Billionaires series. (The books can be read in any order.)