What is your relationship job description?

We work hard to get the job.  We interview as best we can.  We get the job.  But, how often do we really get a good job description.  I am talking about the job of partner, spouse, boyfriend, girlfriend, significant other, husband, wife.  More people sit in my office and say things like “S/he is just never happy…no matter what I do!” or “S/he keeps pushing me away and I don’t know why!”