I have the whole article and in my opinion there are a few things not quite right, so I wouldn't believe too much about what is written! For example, it mentions that Mark has TWO older siblings, David and Ruth. David is younger than Mark, Ruth is the eldest.
Regarding the O-Levels (Ordinary Level GCE) - he passed in five subjects and went on to take A-Levels (Advanced Level GCE) in the sixth form and passed in two. He eventually attained a 2.1 class degree at Leeds University - upper second class honour. So the article confuses O-Level with A-Level.
I feel that this article was written in a very romantic fiction style and it fitted the article very well to assume that R&J was written about Kathy, which is probably unlikely.