Maybe Now by Colleen Hoover

Sydney and Ridge have finally become a couple, free from the guilt that previously clouded their relationship. However, their happiness is tested by the ongoing presence of Ridge's ex-girlfriend, Maggie, who is coping with cystic fibrosis and diabetes. Maggie embarks on a journey of self-discovery, checking items off her "maybe someday" list, including skydiving and dating Jake, a tandem instructor. As Maggie becomes more independent, Sydney grapples with feelings of jealousy and insecurity. The story delves into the complexities of balancing love, loyalty, and personal growth within relationships.