Greg Behrendt writes relationship and self-help books, often using blunt humour to challenge excuses people make for inconsistent or unavailable partners. He's Just Not That Into You, written with Liz Tuccillo, turns a recurring piece of dating advice into short chapters about phone calls, commitment, disappearing partners and the tendency to reinterpret obvious rejection as uncertainty. It's Called a Breakup Because It's Broken, written with Amiira Ruotola-Behrendt, shifts to the practical and emotional aftermath of a relationship ending. His books are conversational, deliberately repetitive and aimed at readers who want clear rules rather than nuanced psychological theory. They fit dating advice, breakup recovery and popular self-help. He's Just Not That Into You is the central title associated with his approach, especially for readers looking for direct, humorous guidance about recognising when a relationship is not being reciprocated. Read more Less