I do agree on the first paragraph it is mention that many pictures at that time included similar poses.  The pose where a model would pose with no distinguished background or any type of environment. The relationship between the main subject and the product also plays a big role on this. Creating the both to relate and fiction as a team not as an individual is a big challenge. On this ad it is not specifically telling you there is a dating relationship between them like the article suggest but more of a friendship between the main character and the subject.