I’m finding it kind of hard to keep up with all the rules about sex. On the one hand, it seems like we’re all supposed to be free to have sex with whomever we want, whenever we want, however we want (regardless of whether either party is married, knows one another, or intends to call in the morning). On the other hand, in order to actually have sex, we’re apparently required to obtain written consent — witnessed by a lawyer and signed in triplicate — or else it’s rape. So, are we having all the sex? Or aren’t we?It occurs...