This is exactly the story that I needed to read today as I'm going through a similar thing. You articulated a lot of the feelings I haven't quite been able to put into words.
I wrote about a lover who knew I'm a writer and sex/relationship blogger. I shared a piece that he inspired, which he loved. It had to do with his kinks and it was purely fantasy/fictional. He must not have liked something else I wrote more directly about him though because he stopped talking to me for a week and then finally texted to ask me to stop writing about him and that he won't be talking to me anymore. Then he blocked me. This was after a year of "not quite dating" back and forth -- "be my girlfriend, please! Never mind let's just be friends."
I've always felt something wasn't right between us, that he only wanted me to be his fantasy lover, not a full human with complex emotions and responses to these fantasies... which I shared in my writing.
Anyway, tanks for sharing this story, and good for you for not being silenced!