Sea of Charms by Sarah Beth Durst (The Spellshop Book Three)

Her boat. Her rules. His music. Their hearts . . .
From the queen of cosy fantasy and acclaimed author of The Spellshop, Sea of Charms is a delightful fantasy romance about finding your crew, your family, and moreover, finding yourself.

Marin has always belonged on the great blue sea. Betrayed by love, she lives and works as a supply runner, sailing from island to island, delivering an array of goods with Perri the sea serpent and Ree the sailor shrub as her crew.

On one of her routine trips to the capital, Alyssium, Marin finds a revolution underway ― and a friend in the line of fire.

What starts as a rescue evolves into a deal: Marin will keep Dax on as a member of her crew if he pretends to be her boyfriend at the End-of-Harvest Festival back home.

But against her better judgment, Marin finds herself intrigued by his stubbornness, his passion for stories, his charming smile ― and realizes that perhaps she isn’t saving him. Maybe it’s the other way around.