We all agree that every relationship has conflicts, which can sometimes arise out of nowhere and turn into heated arguments. All couples experience ups and downs in their relationship, so it is more understandable that in a moment of anger, ill-considered words are said.
According to relationship experts, the one word you should never say during an argument is breakup/divorce. Reason?
First , such a word causes anxiety and stress to the other party. No matter how sure the partner is about love and relationship, such a word has the effect of increasing the level of stress and anxiety.
Second , it can have a negative effect by making the partner seriously consider separation or divorce. Although you may have said it on the spur of the moment, it is not known for sure what effect it will have on him/her.
Thirdly , it is a "low blow" since most of the time it is said to "manipulate" and intimidate the other. A relationship maintained by fear and threats can never be happy.
The word divorce/separation should not be said in cases where you really don't mean it, but say it in the heat of the moment. Think carefully.
In other cases, when the relationship isn't quite right, you can certainly discuss the possibility of separating or divorcing the two of you...whenever you're comfortable.
Source: Women's Health