Is it Love?

Is it Love? A question I often ask myself every time I have problems with my relationship. They say that it is normal in a relationship to have problems because it will make them stronger.  But if the misunderstanding becomes a habit, I don't think it is still normal. Sometimes, I get tired of all the quarrels and arguments. When will it ever end? Then, it came to me, it will end the moment I said I quit! Another question comes to my mind! Can I just quit easily? I don't think I can. And I don't think I will. I hold on for this relationship for years. And thinking about quitting, I should think why did I hold on for that long?