Character mistake: When Kathryn reads the journal copy in the final scene, the camera shows some pages she reads. At one moment, one of the headings reads, "WORLD OF FREINDSHIP".
Revealing mistake: In the swimming pool scene between Annette and Sebastian, a positioning mark can be seen quite clearly on the floor. [The swimming pool used was freezing cold, about 40 degrees, so Ryan Phillippe and Reese Witherspoon were freezing (look close and you can see Ryan shivering), and so were the camera crew, that they didn't repeat the shot, so the positioning mark was left in.] (00:28:05)
Kathryn: So I assume you've come here to make arrangements, but unfortunately, I don't fuck losers.
Trivia: This movie is a retelling of the story of "Dangerous Liaisons."
More questions & answers from Cruel Intentions
Answer: A bit of both. I believe that Ronald did love Cecile. But I also believe that Kathryn manipulated him in such a way and so much that he eventually gave in to his masculine tendencies. He's only human, after all. He wasn't anticipating Kathryn telling anyone, let alone Sebastian finding them in the act.
ChristmasJonesfan