Jewish law also forbids sexual contact short of intercourse outside of the context of marriage, recognizing that such contact will inevitably lead to intercourse.
Few people outside of the Orthodox community are even aware that these laws exist, which is unfortunate, because these laws provide many undeniable benefits.
As one passage in the Talmud states, "a man may do whatever he pleases with his wife." (Nedarim 20b) In fact, there are passages in the Talmud that encourage foreplay to arouse the woman. Any stories you may have heard about Jewish sex occurring through a hole in a sheet are purely an urban legend.
One of the most mysterious areas of Jewish sexual practices is the law of niddah, separation of husband and wife during the woman's menstrual period.
A woman may not withhold sex from her husband as a form of punishment, and if she does, the husband may divorce her without paying the substantial divorce settlement provided for in the ketubah.
Although some sources take a more narrow view, the general view of halakhah is that any sexual act that does not involve sh'chatat zerah (destruction of seed, that is, ejaculation outside the vagina) is permissible.Sex between husband and wife is permitted (even recommended) at times when conception is impossible, such as when the woman is pregnant, after menopause, or when the woman is using a permissible form of contraception.