The conversation between Matti and Ninna starts with Ninna drawing in her notebook and Matti trying to get a look at what she's creating. Matti becomes suspicious that Ninna is hiding something and decides to take a peek at her diary when she falls asleep. However, the diary he finds is not a traditional diary but rather a shared album between Ninna and Matti, filled with stickers and notes about their life together.
As Matti flips through the album, he discovers a page where Ninna talks about having a crush on Federico Chiesa, an Italian footballer. Matti becomes jealous and upset, feeling that Ninna is keeping secrets from him.
Meanwhile, Ninna wakes up and realizes that Matti has taken her album. She confronts him, demanding that he return it, and Matti teases her, saying that he's learning all her secrets. Ninna tries to get the album back, but Matti refuses, continuing to read and make fun of the contents.
Throughout the conversation, Matti and Ninna's relationship is revealed to be playful and affectionate, with Matti jokingly accusing Ninna of having secrets and Ninna trying to protect her privacy.
Here are the key facts extracted from the text:
1. Matti and Ninna are two characters who are engaged and have a relationship.
2. Ninna has a secret diary that she keeps hidden from Matti.
3. Matti discovers Ninna's secret diary and decides to read it.
4. The diary contains Ninna's thoughts, feelings, and drawings.
5. Ninna writes about her dream of being a mermaid and her love for Matti.
6. She also writes about her crush on Federico Chiesa, a Juventus footballer.
7. Ninna has a habit of using a red marker to write in her diary.
8. Matti becomes jealous and upset when he reads about Ninna's crush on Federico Chiesa.
9. Ninna has a polaroid photo of herself with Federico Chiesa, but it's not real.
10. Matti and Ninna have a argument about the diary and Matti's nosiness.
11. Ninna threatens to hide from Matti.
12. Matti and Ninna have two cats, Piadina and Willy.
13. Ninna and Matti have a shared album with stickers.
14. Ninna is 20 years old but looks 15.
15. Ninna has blonde hair, which she calls "golden threads".