Les Liaisons dangereuses (Dangerous Liaisons) Part 1, Letters 26-30 Summary

Letter 26: Madame de Tourvel to the Vicomte de Valmont

Tourvel tells Valmont that his feelings aren't returned and that he should never have expressed them.
She was repulsed and embarrassed by his behavior and says he was mistaking her for one of those women who would get involved with him.
She wants to stay as far away from him as possible and can't believe he treated her with such disrespect.
He asked for her guidance and advice, so here it is: get lost.
She just wanted to be friends, and now he's ruined that.
His expressions of love were insulting and offensive, and if he keeps it up, she'll refuse to see him again.
He should forget the incident ever happened.

Cécile seeks out the advice of the Marquise.
Confessing her indiscretions on paper of course gives Merteuil power over her. Exactly what she wants.
Cécile encloses letter from Danceny and asks how she should proceed. Should she write him back? Is it wrong to love someone?
She trusts she'll get wise advice.

More manipulation from Danceny: he chides Cécile for not writing to him and leaving him in "perpetual torment."
Basically, he tells her that her failure to respond to his letter is neither an act or friendship or love. He suffers and it's all her fault.

Cécile scolds Sophie for advising her not to respond to Danceny. Bad advice.
Madame de Merteuil will be seeing all the letters between her and Danceny from now on so she can give Cécile the best possible advice.
She'll also lend Cécile some books—ones her mother wouldn't approve of.
Shhh—don't tell Mamma about the books.
Merteuil has confirmed to Cécile that she's going to be married and invites her to her private box at the opera so they can chat to their hearts' content.
She understands her so much better than her mother.