A possible concise summary is:
The speaker tells a story of how he met a girl at a boarding school who confessed that she liked him and became his girlfriend. However, he later discovered that she was also touching other girls and trying to kiss them. He was shocked and hurt by her betrayal and saw her leave the school after she was expelled. He asks the viewers to comment on what they would have done in his situation and to like and subscribe to his channel.
Here are the key facts extracted from the text:
1. The text is a transcript of a video where the speaker tells a story about his ex-girlfriend who turned out to be a lesbian.
2. The speaker met his ex-girlfriend at a boarding school where they both lived and studied.
3. The ex-girlfriend confessed her feelings to the speaker and they started dating after kissing in the audiovisual room.
4. The speaker discovered that his ex-girlfriend was inciting other girls to touch each other in the quail shed