This book examines sexual fantasies and their influence on everyday life through the stories of twenty-two men who introduce themselves as bugchasers, i.e. gay men who eroticize HIV. The author defines bugchasing, charts its history and contexts, and considers how it has changed in the age of internet and PrEP. Through the participants, their experiences and contexts, this text also theorizes about sexual fantasies, seeking to understand how people define sexual fantasies and use the internet as a space to navigate their desires, meet others, and find support. Chapters also consider the practical implications of fantasy, most notably, how fantasies influence men’s decisions around HIV prevention and care. This book speaks to renewed interest in both the AIDS crisis and the sociology of everyday life to illustrate how fantasies such as bugchasing appear, evolve, and adapt.