I mean... If you have sex with someone w/out a condom and no one cums, or if you have oral sex with someone and don't swollow cum, is it possible to still get hiv or aids?
There will always be pre-cum even if nobody ejaculates. And as far as not swallowing....You could have very tiny tears in your gums that the virus could enter...So the answer to both questions is....Technically, yes.