You never had an exposure.
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.
HIV is transmitted by;
Unprotected penetrative anal and/or vaginal sex
Sharing works with other IV drug users
Mother to child
Thanks a lot for your comment.
Well I think the best sexual relationship should be in a strictly monogamous relation. It saves you the risk and worries. I would advice everyone not to go for a one night stand but to be faithful to their partners. I've been unfaithful and relation with my wife is now strained because of my worries. Bye for now. take care