People change in many ways. Husband and wife, too, are people because people change, their needs and feelings for each other may also change. Once this happens, it will be very hard for them to live together. In our society, separation is still not an acceptable solution but it is something children, as well as parents, have deal with.
This is the time when a parent left alone to take care of the children needs the support of the rest of a family members. This may mean more work for the children and adjustment in financial matters. Initially, the parent may feel sad and lonely and greatly need the love and understanding of the children.