When Tate Collins meets airline pilot Miles Archer, she knows it isn't love at first sight. They wouldn't even go so far as to consider themselves friends. The only thing Tate and Miles have in common is an undeniable mutual attraction. Once their desires are out in the open, they realize they have the perfect set-up. He doesn't want love, she doesn't have time for love, so that just leaves the sex. Their arrangement could be surprisingly seamless, as long as Tate can stick to the only two rules Miles has for her. 
 Even after the first few chapters, it's completely evident that Tate fancies Miles and while he's clear about not wanting to have any romantic relationship with her, just sex.... she admits that she wants more. 
 For her it never was just about the sex. She wanted a real relationship but took anything he gave her. 
 The no 1 rule Miles has is not to ask personal questions and from his POV that is in every other chapter, we follow the story of how he fell in love with a girl named Rachel six years ago. 
 The question is what did Rachel do or what did Miles to do Rachel to make him this closed up person he is today?