Also following the STD line of thought. On Chlamydia, which can cause infertility, there is a very high rate amongst young people. Some stats are here.
It also includes this note:
"Prevalence estimates suggest that young people aged 15–24 years acquire half of all new STDs1 and that 1 in 4 sexually active adolescent females have an STD, such as chlamydia or human papillomavirus (HPV).2"
That is an awful lot of people to criminalise. In addition:
I note you talk about "wives". What about non married couples, men who pick something up, shorter term relationships, one night stands? Have you a level of relationship in mind before you criminalise?
You don't have anything in there about knowing you are infected. So if person A has sex with person B, and gives them an STD, and person B does not know this and gives it to person C, should person C be prosecuted?
Your plan will criminalise vast numbers of the population. Is this proportionate?
I think you need to firm up in your own mind some specifics. There are questions of proportionality, intent, aggravating factors and so on and so forth, which you don't seem to be taking on board. For example initially you talk about infidelity only meaning that a rape has been committed, now you add STDs and infertility to the mix. You have moved the goalposts and then demanded an answer, yet you haven't answered questions put to you.