But now we come to the real paradox: that something as explosive as sexual excitement can nevertheless become a matter of habit, But then that applies to all our pleasures. We discover some new product in the supermarket, and become addicted to it. Then our tastebuds become accustomed to its flavour, and or interest fades. In the same way a honeymoon couple may find an excuse to hurry off to the bedroom half a dozen times a day; but after a month or so sex has taken its place among the many routines of their lives. They still enjoy it, but it no longer has quite the same power to excite the imagination. Sex, like every other pleasure, can become mechanical.