Didn't notice something

Katy looking back to the book notices a few rules on the inside of the cover of the book, they look to have been written in pen.

Old Rule: This notebook is indestructible and any rules written can only be effected by the current owner of the book
Old Rule: After the first rule, the owner can only add more rules if they add a negative rule that effects them, or they get someone they do not know to make them orgasm.
Old Rule: Negative Rules must have the word Negative in the Rule title, and can only be erased in place of a new rule after getting a stranger to make the owner orgasm.
Old Rule: Rules written on the Cover cannot be changed even by the current owner of the book.
Old Rule: Cover Rules are only visible after someone writes their first Rule.

Katy blinks a bit "wait... what?" she says out loud but realizes she did write a rule to test the book... and erased it so now she had a blank book and only way to add more rules seems to be to add a Negative one first or get someone to fuck her to orgasm.