It all depends upon in which social circle you live.Neena Gupta film actress gave birth to a child fathered by Viv Richards.According to her she is having no problem with this arrangement. So it depends in which social circle you live.In India this kind of relationship is just not acceptable in middle class or hgher middle class.You may find this type of relationship either in a very lower class of people or may be in very high class group of people. Both kind of people have different explanation for this kind of reltionship but one factor is common that is both classes do not care about society. This type of relationship may be good for above two class of people but for rest of the people marriage is still a respectable and only acceptable institution. They find Live in relationship too western and result of these relationship is always short lived tenure.