"You did not arrange a grand scandal with clarification of relationships, so everything was normal" is not such a rare phenomenon.

Oh yes! How many times have I tried this!! While quiet, without screaming and roaring, you say something - many just miss it by their ears. In the end, you propose to break up, and immediately:

Oh, how did it happen?
I’ve told you this and that many times, but you’ve ignored it.
“Well, you didn’t scream, I thought it wasn’t a serious request.