The main character Phoebe has a bit of a mental breakdown and mid-life crisis after her husband decides he wants a divorce, and also reveals he's been having an affair. In an attempt to escape her problems, she rents out the penthouse suite of her dream hotel, and then accidentally ends up joining a week-long wedding celebration. To complicate things, Phoebe gets along great with the groom, and it seems like the bridge and groom aren't the right fit for each other. As you would expect from a romance novel, the inevitable begins to ensue. Although no lines are crossed, it does feel like it dances on some emotional cheating, which feels a bit hmm considering Phoebe was cheated on herself.
I'd say compared to your run-of-the-mill romance novel, the plot and emotional depth to the story felt pretty good. However for winning the 2024 Goodreads choice award for "best fiction novel" it felt pretty mid.