Knocked-Up My Brother’s Bride by Kathilee Riley

HIM: My brother asked me to be his best man. His fiancé is my best friend I've been in love with since we were kids. HER: My childhood best friend, is back in town. All grown, sexy and a billionaire doctor. Sparking a desire I haven’t experienced in… ever. But I’d never cross the line with my best friend. Not with his brother’s engagement ring on my finger. Not when his big brother is my fiancé.