Wow, this person - or perhaps persons - who worked on this article, has never been in a real, loving, communicative, healthy relationship. I only have three years of psychology under my belt, so I am no expert, but all of these things are a sign of a passionate, loving relationship. Written as advice, they also are: signs of a single person with a chip on their shoulder, part of a couple but dissatisfied with their relationship, or in any sociological state and is far too concerned with what others are doing.
Stop teasing/playfighting? Stop talking? Stop showing affection for each other? I don't know where to begin, seriously. As a couple ages together (I have been with my Better Half for 20 years) these things all decrease, but we still do a lot of them because we are in love and having fun. The person writing this is obviously not a younger person in a passionate relationship, as I see all of these in young people who are happy with their partners; it just comes out.
I'm all for consideration of others in public places, but this must have been written purely to upset people in loving, fun, passionate relationships into registering just to make a comment on this article. Well, it got one thing right at least.