I've had this same issue with a good friend's SO who has a habit of jumping on me/others on journals, and going "And? and? and?" a lot, crowing when he thinks he's got you on a logical technicality, flaming but not liking being flamed back, and is generally a jerk. Which is an annoying impression to have, as I've never met him irl, but he's upset me and mine far too often. I don't understand why debate can't be something like, Point; questions point; has different pov; gosh, I don't agree but that's interesting.

I think my SO discusses like that, that's why we get on. It was a very strange thing to find out that some of my friends list found even that combative/upsetting because he holds very different opinions on stuff.

(sorry, a bit rambly.)