Is there a right way to romantically connect with others?

[Kernel Sohcahtoa]

I began pondering this question during and after I watched Her (2013).  An interesting theme was that of polygamous and monogamous relationships.  Specifically, are they both equally valid and equally ethical venues of pursuing romantic connection? Is the path we take toward seeking romantic connection the result of social conditioning, biological hard-wiring, a combination of the two, or do you have another explanation? Do you have any further insights? Thanks.

P.S.  I'm looking forward to reading everyone's insights and wisdom.