Searching for Someday by Renee Roman

Rayne Thomas is an introvert and likes it that way. But after being spectacularly dumped and losing out on professional opportunities because she doesn't put herself out there, she definitely needs to make a change. Enter her new personal trainer, Maggie Flanders. Kind? Yes. Fun? Yes. Sexy? Oh God, yes. But not even the most erotic dream of her life gives Rayne the confidence to risk this tentative new friendship.
Maggie Flanders has thrown herself into her work since her partner died eight years ago. There's lots of opportunity to meet women and an occasional night of pleasure to satisfy her needs without letting anyone close. She lets everyone think she's a player. It's less lonely than the truth. But Maggie is never, ever falling in love again.
As Rayne and Maggie work together in and outside the gym to build Rayne's confidence, they struggle even harder at denying their attraction. Letting go of the past to embrace a better future takes herculean effort, but with love on the line, will Rayne be brave enough to tell Maggie how she really feels?