Lyric Bishop feels like a fraud – she’s studying sexual chemistry in romantic partners and what makes for a successful long-term relationship, only she can’t seem to figure it out in her own dating life. The science is sound, but how can she give her expert opinion with no real-world experience? In order to complete her doctoral thesis, she must crack the Sizzle Paradox – it seems the more sexually attractive she finds a guy, the less likely it is to come with an emotional connection; but why? – and to do that she must get the help she desperately needs.