Mainsplained

A guy from Uni I barely know lent me a book of short stories we had briefly discussed, asked me to read one of them.
When I returned the book a couple of weeks later, he asked me what I thought of the story, and I briefly explained I liked most of it but didn’t agree with some aspects and some of the actions of the character. I was in a rush, so we left it at that.

Later that eveningt, I received 7 long paragraphs of text from him over whatsapp, in which he “mansplained” the plot of the story, the motivations of the characters, as well as my own opinion and comments on the plot back to me. MY. OWN. OPINION. Needless to say, I found it infuriating that he had the audacity to send me – completely unsolicited – these long messages about his views and why his thoughts on the story are “right” and more valid than mine.