Monogamy is like the color yellow

When I start working with a new couple or individual around relationship concerns I often begin by asking them what their relationship goals are.  Most, but not all, will tell me that they are just looking for a nice, loving, monogamous relationship.  They say that like I am supposed to know what that means — and I don’t.  Not that I am clueless, but rather because I know that there is more than one meaning to the word monogamous.