Welcome to Sundae's, a retro diner that serves up the best dessert in all of Manhattan--and where three women find the right man to share it with....   In "What You Wish For," Delaney Maguire's wedding date is set. With her happily ever after guaranteed in just days, why is she suddenly doubting that Bob the banker is the one?   Back from London and her smash art show "Lola Was Here," successful photographer Lola Reynolds is thrilled to see her dizzyingly handsome ex again. But can he convince her that she's also a sensation in matters of the heart?   Kate Lieve, "The Waitress" at Sundae's, has a crush on one of her regulars, but she can't ignore the wedding band on his finger. Is the man with whom she's shared her deepest secrets really off limits?