Ok so I get the meaning and all but I often wonder where the name came from, here is why I wonder. 1.Two people are happy to be together (that’s the norm ya know) 2.So as time goes by one of the two stop’s getting the attention that they had in the past and they sit lonely and bored. (happens sometimes) 3.So the other partner seeks what they are not getting at home with another. So this is where I wonder how this word became the norm, because if one of the two partners are sitting day by day not getting what they once had and we as humans need that connection, (I will use the word here.) who is really cheating who?