My boyfriend made a fake Reddit story about me. What should I do to fix the relationship?

Many of you might have seen the post ‘I 21M want my 21F girlfriend to stop yumeshipping, how do I got about it?’. This post was completely fabricated story about me and I will be dissecting the post showing you bits are true and which are false. Firstly, he lies in the title. I am 17 non-binary and he is 17 male. In his first paragraph he gets the definition of yumeshipping right and who I yumeship myself with. His second paragraph starts off factually we did meet in highschool but we haven’t been dating since freshman year like he wants you to believe. Five months ago we have a relationship that lasted one month. We broke up with me because he wanted to explore more options ie his objects. We had gotten together again at the time of his post. He claims in his post **‘**we were both theater nerds that enjoyed talking about our favorite plays, musicals and anything just nerdy. She would often talk about A Streetcar Named Desire and talk about how Mitch was her favorite character.’ This is incorrect because we had initially bonded due to are shared love in the books series warriors cats and we would roleplay being in different clans. I never told him about my interest in Mitch at the time. The only reason he found out about my interest in Mitch is because one of my ex-friends shows him a video from my now deleted TikTok. He also lies when he says that I spent money on merch for Mitch. All of the merch in question were paper crafts that I made also I had a pin maker so I had button pins of him. I didn’t buy anything. He also claimed in a comment that he gave me money to buy merch which is incorrect. At the time of our friendship and our relationship he had no money. When we were in school, he would ask for lunch money everyday and would sometimes steal my phone to use my CashApp which was connected my dad’s debit card. He also makes the grand claim that I had a body pillow of Mitch and I used it to cuddle at night. Which is incorrect due to my sensory issues I don’t like anything on my bed other than my pillow. Also he claims that I made an ai of Mitch and I spent all my time talking to it which is incorrect. I don’t use any ai. He also claimed that he texted. False again because during the time of our relationship he did not have my number at the time. I did not ghost him. We do not live in a shared house. I live with my parents and he lives with his. He claims that he destroyed my merch which didn’t exist so false. Also claims to throw at a binder of annotations that I had which didn’t not exist so false. His screenshots are fake as well. Please do not believe a word he says