Chief Ashkenazi Rabbi Yona Metzger, whose integrity is often questioned, prohibited single women from attending ritual mikveh bath. Post-menstrual mikveh bath is a pre-condition of sexual relations. Metzger imagines the modern religious women who ignore the biblical prohibition of extra-martial sex would be deterred from sex by being unable to perform ritual bathing.
The Torah mandates that participants in pre-marital sex eventually marry. There is no straightforward prohibition of extra-marital sex for divorced men and women.



Where is written mikve is a requisite? Women have to clean themselves, but no need for a Mikve. The mikve was a measure of clean water when showers did not exist, but now a shower is like “running waters”. The Torah explicits that when you lay with a women, you are in deed married, since not “religious” marriage ceremony is descripted. The ketubah in deed is written in Aramaic, giving you a hint of the origin of this costume. Divorced women and men cannot freely have sex, since they divorced in order to marry again. Otherwise, who will bother about divorcing?