What does it mean to "have sex? Research has found that what people count as sex is all over the map. For example, consider a study of heterosexual college students who were asked to determine whether each of 21 different...
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Brenda96705 said: See here:. The purpose of this study was to characterize the risk of human immunodeficiency virus HIV infection for men who have sex with men and to identify the risk such men pose to their female sex partners. Bi men having sex.