see as i told you ,that sperms have a very short life span as they need a particular environment to stay alive .................When they are exposed ,they dont get a proper environment to stay alive so they die(other than invivo conditon:vagina,or invitro) ,and soap contains chemicals so its not possible that it can survive .........as far as i know ........
It gets washed off and a sperm life span outside is very short ..........