What should couples do when their relationship is not working out well (Page 2)

Friendship, between a man and a woman, has always  been sweet, blissful, almost like Heaven on earth at it's very begining. So does marriage between couples. There is always high expectation of goodwill, love un-ending , almost to the point one could imagine the Garden of Eden in it's perfection, but it's always an unexpected suprise, to see  the bright clouds of love becomes blury and gloomy , the curtain drawn,  the very bright sun that rose from the east , is now settling at the west, couples are now questioning their relationship and blaming eachother for the upheaval. At this point, what should couples do when their relationship is not working out.