If you are arguing constantly you need to look at the reasons why. Maybe it's that you're not compatible with each other? Or it's that you are too comfortable and no longer being as respectable to each other as you once were.
A break can help you both realise your true feelings, it can mean when you next see each other you won't take the other person for granted and work harder to make the relationship work. It doesn't have to mean it's over, however you should also accept the possibility that it could well be!
"Never make someone your priority, when to them you are only an option"