You are my brother. In which episode was Dong Jie losing his innocence?

"You Are My Brother" is in episode 13.

According to Douban Movie Search, the 13th episode of the TV series "You Are My Brother" tells the story of Dong Jie losing her virginity. Dong Jie and a group of people went to a disco and were targeted by Lao Liu and others. Lao Liu and others got Dong Jie drunk and took him to the hotel to rape him. Hua Leilei and Ma Xuejun came to the disco and learned that Dong Jie had been taken away by Lao Liu, so they hurriedly looked around. The next morning, Ma Xuejun and Hua Leilei found Dong Jie in the hotel who had been picked up and brought home. Dong Jie had lost her innocence.