Have there been any cases of someone getting HIV by getting semen on their hand via mutual masturbation? What if the person had a torn cuticle or peeled piece of skin?
Mutual masturbation is not an HIV transmission risk even in the scenario you describe. HIV is passed sexually though unprotected intercourse. HIV must find specific target cells to infect and it cannot infect skin. Focus your attention on using condoms for all intercourse and you'll stay HIV-free. More information on HIV transmission can be found
To your health,