Felicity Keith's The Language of Desire is a relationship guide designed to help women enhance intimacy by understanding and leveraging male psychology. The program comprises ten modules, offering techniques such as the "Pavlov Erection Technique" and "Tease Intensifier," aimed at reigniting passion and fostering deeper connections. Users have reported improved communication and revitalized relationships, attributing success to the program's practical strategies. While some may find the content bold, the guide emphasizes respect and mutual satisfaction. Available in PDF format, it includes worksheets and a 60-day money-back guarantee, making it a comprehensive resource for those seeking to enrich their romantic lives