Does he really love me at this point ?

We have been together almost 6 years now. We live together. He is just constantly in a bad mood to the point where I walk on eggshells. He is happy one minute and slamming doors the next. His bad mood could have nothing to do with me and I would still take it personally from his evil looks and silent treatment. Im exhausted. Everyday is a black rain cloud over our home. I'm still feeling love and attraction. I don' want us to go downhill.