The Billionaire's Assistant: An Enemies to Lovers Office Romance (Billionaire Brothers) by Penelope Ryan

One night. No names. No limits. Until he walks into the boardroom—and she realizes her wildest night just became her new reality. Olivia Reilly never expected the man who rocked her world to be her new billionaire boss. Cold, commanding Asher King acts like he doesn't remember her—but the way he watches her says otherwise. Quitting isn’t an option. Olivia needs the job to save her childhood home, even if it means enduring Asher’s icy glares and blistering tension. To cover the purchase of her late family’s estate, she takes on a secret, scandalous side gig … one that draws the attention of a dangerous stalker. When Asher sees the bruises, all bets are off. His possessive side ignites, and the man who’s always kept his distance suddenly wants to claim her—for good. She was never meant to fall for her boss. He was never supposed to break his own rules. But their chemistry could burn down everything in its path. Read more