I think everyone likes to know they are loved, needed, attractive, clever etc and so many use compliments as a means of keeping their partner 'down there'. I used to have a friend who once told me she and her fella' were going to a wedding and he looked handsome but she wouldn't tell him for fear he would get cocky ... the way I see it, if we don't make our partners feel loved, needed, tell them we are proud of them and how clever and handsome/attractive they are, eventually they make find someone else who does but it's got to cut both ways. If there's one giving and one taking it won't work.