Richard,

Because of the high incidence of STD's in general, and the risk of HIV in particular in present day society, I don't believe I would sleep with some one unless or until we presented each other with medically documented clean bills-of-health. And I don't believe I would trouble myself or trouble a potential sexual partner for that unless we were both looking for, (and thought we may have found,) something more than good company and the dance of flirtation.