Enchanted Summer by Samantha Rose

Moving to a small town to get away from it all, the last thing Nate expects is to find a beautiful fairy living in his garden. For years he’s been struggling to find the inspiration and courage to make music again, and Ariadne awakens that part of him he thought he’d lost forever.
Escaping from her home realm, Ariadne never thought she would run into a boy she’d encountered in the forest many years ago. Now that boy has grown into a man, and she finds herself as enchanted by him as she is by his music. The more she gets to know him, the more she is convinced that there is truly something magical about him.
But she knows their time together is limited, and their relationship is forbidden. She can’t stay in his world for long, no matter how much she wants it. They must find a way to be together before it’s too late.