The Fox in the Snow wrote:
My other half (she isn't her sister, but coupled with my partner's brother) is certain that my dislike for the poor girl is based on her being a little bit thick. It isn't. I think intelligence is overrated in the context of human relationships. I only care that a person is 'nice'.
I struggle with this, since there's a strong correlation between thickness and the inane conversation you go on to describe. I never judge people by their intelligence or lack of. (Judgment is for moral behavior, but then that, too, is partly determined by intelligence. Minefield.) But that's separate from wanting to be around someone for any length of time.
I have toyed with the notion that I'm just not very pleasant. By coincidence both us couples share an anniversary which means in two weeks time I will be sat across a table from her eating dinner. The very thought makes me angry. I've no idea what's wrong with me.
It kind of sounds like a situation where when you're together, she gets to "be herself" and you don't. That anyway is how I feel when I'm around such people. You'd be or feel less unpleasant around someone who didn't annoy, and maybe she'd be less pleasant around someone who did.