What episode is obsession?

This is the third season episode 12 of Tu Tu with Big Ears.

In this episode, under the questioning of Tu Tu, Zhang Shuaizi and Xiaomei, my healthy brother told me about having a candlelight dinner with a girl at the weekend. Tu Tu told his healthy brother that if you like someone, you should persevere. Then, Tu Tu explained that persistence means holding a person's hand and not letting go.

Tu Tu, Zhang Shuaizi and Xiaomei think that healthy brother and Fangfang can also have dinner together, so the dinner with Fangfang is called good friend lunch by healthy brother. When Tu Tu's mother learned about this, she intended to help make a reservation, but later found out that she was wrong, and the children thought it was a lunch between good friends.

Extended data:

Relevant persons introduced:

1, Hu Tutu, three years old, is happy and full of energy, with extraordinary imagination and special hobbies. Love to think, don't follow the thoughts of adults, and often make amazing words. He likes to eat snacks, especially crisp and sweet snacks like biscuits and potato chips. He laughs loudly when he is happy, his ears are red when he is shy, he cries when he is sad, and he looks like a fool when he is depressed.

2. My healthy brother, the head teacher in Tu Tu, and the unmarried big boy are all very energetic and like children. Although Tu Tu and the brush have caused him a lot of trouble, we can't blame them just because they are "strong and brave". However, Brother Healthy, every time I have to date a female teacher in a strong class, Xiaomei inadvertently tells the secret of the girl.