Honestly, this would be a deal-breaker for me. This demonstrates a level of contempt and insecurity I could not tolerate from a romantic partner.
Agreed. Intolerable is the word I'd use as well. Interrupting your partner is bad enough. To correct them on a point that isn't relevant to the discussion is rude and really shows lack of care or interest. Personally, I'd avoid even being friends with someone like this.
To answer your specific questions:1) When do you correct people and when do you let things go?
As a general rule, I think you may correct someone when:
- it pertains to the point of whatever they're discussing, instead of being an offhand comment or tangential to the subject,
- you are 100% certain you're correct,
- they've finished talking.2) How do you correct people politely if you do feel the need to correct them?
I tend to say something like 'Are you sure that's correct? I thought it was X, Y, Z?' and be prepared to support my correction with citations or logic if at all possible. I don't often correct people though.3) How do you handle it when someone's correcting you is coming across and nitpicking/rude and is really annoying?
I don't think it's E-hell approved but I would go with one of the following:
- stop talking and walk away.
- tell them bluntly to quit interrupting and arguing over unimportant details.
- raised eyebrow and complete silence.
- 'That's very interesting but not relevant to what I was saying'.