Slowly, All at Once by Rie Anders

Socialite, and heiress to a Major League Baseball franchise, former Olympic Equestrian Camille Bradley has found herself homeless, and penniless. In the middle of one of her many charitable fundraisers, Camille has found herself without the capital to continue the ‘Sexy Men of Sports’ calendar she was in the process of completing.
Finding herself at the mercy of her best friends’ brother, Jacob, Camille moves into the upstairs apartment of Brooks Outfitters. The problem? Jacob still lives there, and he’s not happy about the intrusion. She resorts to begging Jacob to help her finish the calendar and he agrees, on one condition. Help him with a three-day white-water rafting camping excursion and he’ll help her out with recruiting the remaining athletes.
Jacob’s expectations, and opinion, of Camille are low, and when she agrees, he finds himself tortured by her sweet nature and sexy body. He’s been happy with the frequent visitors in and out of his bed, and just because they shared a past, doesn’t mean they have a future.
Finding her own way in the world, without her family’s fortune, Camille discovers an inner peace, that softens her heart, and opens her mind, making her even more irresistible to Jacob. Can they forgive each other enough to find their way back?