Annette refuses to see or speak to Sebastian, so he leaves his journal for her to read.
In which, he has detailed all of Kathryn's manipulative schemes as well as their bet, and written his true feelings for Annette.
Greg is pressured into investigating who did, and Sebastian also orders him to present him in a good light to Annette.
Later, while gushing about Sebastian to Annette, Greg discovers that the culprit is Cecile's mother, Mrs. Wanting revenge on the Caldwells, Sebastian agrees to seduce Cecile. Caldwell about Ronald and Cecile's romance and Mrs. Sebastian, in turn, calls Cecile to his house, ostensibly to give her a letter from Ronald.
Sebastian begins to fall in love with Annette, who returns his feelings but still resists him.
Sebastian calls her a hypocrite because she claims to be waiting for her one true love, but when her one true love chooses to love her back, she resists.
After announcing that she would reprise her role from the 1999 classic film in an upcoming NBC pilot, the actress shared a throwback snap to Instagram on Thursday, writing, "I was feeling nostalgic - and yes #Cruel Inventions was the original tittle.
This pic was 1998 at our kick off dinner." Reese Witherspoon, who can be seen in the pic with ex-husband Ryan Phillippe, reunited with Gellar in Los Angeles last year attending a Cruel Intentions parody musical, before rumors started to swirl that a new Cruel Intentions project may be underway.
Sebastian tracks her down, professes his love, and makes love to her.
As he has won the bet, Kathryn offers herself to Sebastian the next day, but he refuses; he now only wants Annette.
Kathryn warns him not to do it, that people don't change overnight and that it would not only be destroying his reputation, but also hers.
Afterwards, Sebastian full of remorse tells Annette he just wanted to see what she was like in bed. He then goes to see Kathryn to fulfill the initial arrangement they had and tells her that he has broken up with Annette and arranged for Cecile and Ronald to be together.
She relents, but Sebastian refuses her, confused about his feelings colliding with his stolid sexuality.