Gray released the two-part movie in February on his JustForFans page for free, with the intention of educating as many as possible on U=U, the concept that people with HIV who maintain an undetectable viral load by taking antiretroviral therapy cannot sexually transmit the virus to others. Written, starring, and conceived by British adult star Kayden Gray, UEFU is a hybrid public service announcement and gay romantic dramedy that just happens to feature full-on gay sex. Porn dialogue and storylines aren’t usually memorable, but Undetectable Equals Fucking Untransmittable isn’t your average hard-core film.