Titles in This Set:. Not In Love. Problematic Summer Romance. Condition: New. Format: Paperback. ISBN (Not In Love): 9781408728901. ISBN (Problematic Summer Romance): 9781408729885. Publisher: Little, Brown Book Group. Age Range: Adult (18+). Overview:. Discover the connected Not In Love world by #1 New York Times bestselling author Ali Hazelwood in this two-book paperback collection. Featuring Not In Love and its companion novel Problematic Summer Romance, this set brings together Hazelwood's signature blend of sharp banter, simmering tension and brainy heroines navigating biotech careers and complicated attraction. Perfect for readers who loved The Love Hypothesis or Love, Theoretically, this bundle suits any romance shelf, gift occasion, or summer reading pile.. About the Books:. In Not In Love, biotech engineer Rue Siebert has built a stable, hard-won life at Kline, a promising food-science start-up - until a hostile takeover led by the infuriatingly magnetic Eli Killgore threatens everything. Forced into close quarters with the man determined to dismantle her company, Rue finds herself drawn into a forbidden, no-strings-attached affair with a built-in deadline, where loyalty, ambition and undeniable chemistry collide across the boardroom and the lab. It's a slow-burn, workplace-adjacent romance that fans of Hazelwood's STEM heroines will instantly recognise.. Problematic Summer Romance shifts focus to Maya Killgore, still finding her footing in life, and Conor Harkness, the older biotech powerhouse who happens to be her brother's best friend. When a family wedding in Sicily throws them together for over a week in a romantic villa, the age-gap tension Maya has tried to ignore becomes impossible to escape. Witty, warm and set against a gorgeous Italian backdrop, this companion novel delivers the emotional payoff and banter Hazelwood readers crave, while standing on its own as a satisfying romance. The two novels share overlapping characters and the Kline biotech world, making them a natural pairing for anyone wanting the full story.. Key Benefits:. Two full-length Ali Hazelwood paperbacks in one convenient, giftable set.. Shares the same extended cast and biotech world across both books.. Ideal for fans of witty, brainy heroines and slow-burn, high-tension romance.. A ready-made gift for romance readers, book clubs, or BookTok fans.. Brand new UK paperback editions.. About the Author:. Ali Hazelwood is the pen name of a #1 New York Times and Sunday Times bestselling author, originally from Italy, who lived in Germany and Japan before moving to the United States to complete a PhD in neuroscience. She is best known for blending academic and biotech settings with witty, steamy contemporary romance, including The Love Hypothesis, Love, Theoretically and the Not In Love world. Alongside writing fiction, she works in STEM academia, and outside of work she can usually be found crocheting or watching sci-fi with her cats.. Why You'll Love This Set:. Two addictive, character-driven romances in one set - perfect for readers wanting the complete Not In Love experience, from forbidden office tension to a sun-soaked Sicilian slow burn, in matching brand-new paperbacks.. Please Note: Books are supplied as the UK paperback edition shown, with cover artwork and ISBN as listed above.