This document summarizes a presentation on a text-message based HIV prevention program for gay, bisexual, and queer adolescent males. The program, called Guy2Guy (G2G), involved sending tailored text messages on healthy sexuality and HIV prevention to 302 participants ages 14-18 over 6 months. Evaluation found high rates of program acceptability and learning among participants. The attention-matched control group also found the program engaging. Overall, the results suggest text-based programs can effectively engage youth in HIV prevention behaviors.