Theoretical physicist Elsie Hannaway's many lives have finally caught up with her. She meets Jack Smith, the attractive, annoying older brother of her favourite client who ruined her mentors career and undermined the work she loves. Ali Hazelwood has a knack for writing romance books that allow the characters to have depth outside the relationship, and i will never stop loving the women in STEM aspect. I loved how both Olive (The Love Hypothesis) and Bee (Love on the Brain) showed up or were mentioned in the book. The only reason it drops a star is because i passionately think that Ali Hazelwood does not know how to give characters good names, and the sex scenes are always a bit too much for me. I love that the characters' faults are presented and no one is "perfect" like you get in other romance books. I recommend this book to romance lovers, but i do recommend reading The Love Hypothesis and Love On The Brain first.