sexual union, n.All

Sexual union (n.) renews ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠life by raising tension: the other brings fresh "vital differences" which must then be lived off.