Your lover's hotheadedness is really ticking you off. But you knew what you were buying -- so why do you have buyer's remorse? You picked yourself a sweetie who's compellingly intense, but rather hard to take.
There's too much drama for your taste: arguments, fights, scenes. Other people may have told you they don't like being around the pair of you, because your rivalry makes them uncomfortable. You may feel like you don't have an awful lot in common, or like you have difficulty finding common ground. On the other hand, you and your lover prove the old saying: opposites do attract. When you're not bickering and quibbling, the pair of you have a great time being involved together in intellectual, social, and charitable pursuits. You travel well together, and enjoy taking on projects with each other. So that's where you should put your focus -- on what you share rather than what you lack. Get involved in something that interests both of you, and give it your all. Your differences will evaporate if you can stop putting so much energy into noticing them.