Love at First Swim by Rachelle Stevensen

Gunner Powell works too hard. Being a real estate guru, he doesn’t have time to date and hasn’t wanted to either. Until his sister sends him a picture of the mermaid she hired to swim at her daughter’s birthday party. He is gone for her, without even knowing her name. When his niece, Cassidy is staying with him over Halloween, she invites her friend Arielle to come trick or treating with them, Gunner doesn’t realize it’s his mermaid.

Arielle Moore has two loves of her life. Sewing and princesses. With her best friend Kadence, they open a shop making little girls dreams come true of being a princess. They also dress up as mermaids and princesses at parties. She loves the little kids, but longs for love herself. Meeting Gunner was not something she ever expected. He seems to be the complete package. But is everything like it seems? Or will their happily ever after be in question?