Since HIV is not transmitted by saliva, it is impossible to get it through sharing a glass, a fork, a sandwich, or fruit.
How HIV Is Spread

HIV must be present
In sufficient quantity
It must get into the bloodstream

HIV Survival Outside The Body

How long can HIV survive outside the body
Risk of transmission
Exposure to air

HIV can be transmitted through

 "bodily fluids" such as: Blood, Semen, Vaginal secretions and Breast milk