Book 5 of 6: Boston's Irresistible Billionaires I knew better than to take my best friend's little sister's virginity at that Halloween party. But in my defense, I didn't know how to say no. Or maybe I simply didn't want to. She was my Cinderella and I was her masked villain. Then I ruined everything. Twice. Years later we're undeniably enemies, our hate for each other legendary. Except I haven't been able to stop thinking about her. Or that night. Only now she works for me in the hospital where she's a medical student and I'm an attending physician. Not to mention, without realizing it, I bought the apartment next to hers. We try to keep things professional but when she learns the truth behind the secrets I've been keeping, angry sparks explode into a raging inferno of scorching touches and burning passion. I know I have to keep my distance. She's all wrong for me. Too young. Too bratty. Too dangerous to the life I've worked tirelessly to rebuild. The one being with her would destroy. The problem is, I've never wanted anyone more. And I don't know how to stay away for long. Especially when I discover I'm not the only one keeping secrets. What you can expect for UNDENIABLY ENEMIES... * Grumpy obsessed doctor hero * Sunshine medical student with a tragic past * Enemies to lovers * Age gap (10 years) * Brother's best friend * He's her boss * Neighbors to lovers * Secret relationship and texts * He falls first and HARD * LOL scenes, fiery banter, and SO MANY FEELS * STEAMYYYYYYYYY!! With tons of dirty talk, k!nk, and play * HEA * No cheating