As the author notes, nobody wants to explicitly admit interest or do anything "romantic," for fear of being labeled clingy, desperate, presuming, or just plain dorky. Generally, whenever you see two people just having a nice time together without awkwardly remaining "super chill," you can generally assume they are Christians.
Also the overarching emphasis on sex. That gets old too.
I was 45 when I realized that I was never going to be "cool."