HIV is unable to reproduce outside its living host (unlike many bacteria or fungi, which may do so under suitable conditions), except under laboratory conditions, therefore, it does not spread or maintain infectiousness outside its host.
But it's perplexing if some of the other guy's semen would have gotten into my a** while he fingered me...since he had came (and probably had some on his hand...) :/
There is no risk whatsoever ? ...great ! Thanks.
NOTHING you describe above ever put you at risk for HIV, You are fine :)