It was during his freshman year of high school when Sam Smith approached his doctor — he had been exploring his sexuality for a couple years. “I was like, hey, I’m having sex with guys,” he said, recounting the doctor’s visit. “What do I do?” Smith hoped that his doctor would suggest pre-exposure prophylaxis, or PrEP, which is a daily pill that can prevent someone from contracting the HIV virus if they’re exposed to it.