OK, third attempt at writing this post and I will try to keep it simple.
Is it ever acceptable for a person to call their partner names or put them down? e.g. In an argument, or when they are angry/frustrated/stressed generally?
I know it isn't right when it happens all the time, and I am worried about my relationship with DP. I think making it more difficult for me to judge is that my mum used to object if me and my sister called each other "stupid" yet his family are really different and always seem to be arguing and putting each other down.