A possible concise summary is:
The speaker tells the story of how a boy from her second grade class has been stalking her for nine years, calling her, making fake social media accounts, and following her around. She tries to confront him and stop him, but he claims he loves her and knows everything about her. She is scared and jokes that he might kill her after she uploads the video.
Here are the key facts extracted from the text:
1. The text is a transcript of a video by Tana Mongeau, a YouTube personality, about her stalker.
2. The stalker has been obsessed with Tana since second grade, when he would call her house phone and say he loves her.
3. The stalker created a MySpace page called "I love you Tana" and a Facebook page called "I hate Tana" or something similar, where he posted poems, pictures and songs about her.
4. The stalker also followed Tana around in public places and posted pictures of her on his Instagram, pretending to be her boyfriend.
5. The stalker sent Tana a long text message with personal details about her life, such as her birthday, favorite places to shop, and best friends' names.
6. Tana blocked the stalker on all social media platforms, but he recently reactivated his Instagram page and resumed posting about her.