The difficulty does not lie in marriage, but in the possessive, existential structure of both partners and, in the last analysis, of their society. The advocates of such modern-day forms of living together as group marriage, changing partners, group sex, etc., try, as far as I can see, only to avoid the problem of their difficulties in loving by curing boredom with ever new stimuli and by wanting to have more “lovers,” rather than to be able to love even one.