I want to ask you something. I'm looking for a story. It was Bl, and I think the MC was mo...

I want to ask you something. I'm looking for a story. It was Bl, and I think the MC was moving on to the story he wrote. In the story, the protagonist was his friend from high school and was with Mc's stepmother. At first, the MC was trying to remind himself, but then he wanted to give up and get out of the story. Because mL didn't remember him. MC thought about dying. It was a historical story. He was the son of the MC Count. That's what comes to mind. Is there anyone who can tell me this story? Please help. I wrote it in translation, I hope it was understandable.