I'm upset that my couch is damaged
That's concerning. How did your couch get damaged?
I have no idea, I'm just upset.
It's understandable that you are upset about your couch since it is your own personal belonging and it's expected that we treat our possessions with care. However, you should not let your anger consume you and instead look for ways of fixing the issue. It should be possible to repair your couch and bring it back to good condition.
I'm upset that you don't agree with me. I'm going to harass you until you give me an apology.
I do not disagree with you, it can be upsetting having your couch damaged, I get that. But what I am saying is, after you get upset, it's now time to get it fixed or at least buy a new couch so that you wouldn't get upset. It was very concerning that you have threatened me just because I have recommended you to do something about it.