If two people are dancing/grinding where they're rubbing genitals together and both are clothed. I had leggings and underwear on. The guy had pants on, not sure if he had underwear on. And he came (had an orgasm and semen came out). Could an STD be transmitted to me? If he had wet semen on his pants and our genitals were rubbing? Even if we both had clothes on? Or would the clothes in this situation prevent any transmission of STD's?