[_rutinerad]

To me it just seems like they're exploring the funny side of relationships. That they started with funny observations about relationships and then picked a combination of main character and side(?) character that made sense to play out each joke. None of the main characters have any regard or respect for their romantic conquests - once the joke is done, they move on to the next thing. Just like they don't have respect for each other or anything else in the universe - except parents.