Arguments are part and parcel of any normal relationship. In fact, arguing occasionally can be a good thing. It can mean that you and your partner are letting each other know what's on your mind, instead of keeping things inside and growing resentful.
But if your arguments are turning really unpleasant on a regular basis - or you find you're stuck in the same negative patterns over and over again - then, over time, you can cause real damage to your relationship.