The Perfect Deception by Jennifer Wilck

When Dina and Adam run into each other on a deserted road, Dina thinks Mr. Flashypants can’t possibly be interested in someone like her. Can they trust each other to look beyond the surface?

Dina Jacobs is a single librarian who has never fit in due to her off-the-charts intelligence, frizzy hair and rounder-than-socially-acceptable figure. She left her past behind, until an invitation to her ten-year high school reunion causes all her insecurities to return.
Adam Mandel is a single corporate attorney who just missed his third deadline at his father’s law firm, jeopardizing his chance at making junior partner. With his reputation on the line, Adam needs all the help he can get to convince his father that he deserves the promotion.
Adam thinks Dina is just the person to help him improve his reputation. Neither one of them counts on falling in love, though. And when lies and insecurities ruin their budding relationship, will either one of them be brave enough to step forward and claim what’s theirs?
The Perfect Deception is the third book in this new-adult, contemporary romance, with a heroine who spouts random facts when nervous, a hero afraid to let his inner dork escape his polished outside, and a fake relationship you’ll love to watch develop into something real.