You, Me & the Sea by Elizabeth Haynes
Rachel is at crisis point. A series of disastrous decisions has left her with no job, no home, and no faith in herself. But an unexpected job offer takes her to a remote Scottish island, and it feels like a chance to recover and mend her battered self-esteem.
The island's other inhabitants are less than welcoming. Fraser Sutherland is a brooding loner who is not happy about sharing his lighthouse - or his precious coffee beans - and Lefty, his unofficial assistant, is a scrawny, scared lad who isn't supposed to be there at all. Homesick and out of her depth, Rachel wonders whether she's made another huge mistake.
But, as spring turns to summer, the wild beauty of the island captivates her soul. For the first time in years she sees the hope of a better life - if only she can break the deadlock between two men who are at war with one another, and with themselves.