Depression Support Group
Depression is a real and debilitating condition that is often misunderstood by family and friends. Its meaning can range from a prolonged period of sadness to an actual mental illness with specific symptoms. Find and share experiences with others who are going through the same struggles.

Be strong. Go to him with an honest heart and open hands, and admit your wrong in the fight, say nothing about his want to be right or what you think he did wrong, only that you have done some wrong and that you love him and miss him.
My husband and I have fought many times, and too often, my strong will gets in my way of being a good wife. I am NOT submissive, but I am willing to admit my wrongs to him. It usually helps him to take a step back and admit his too, so we can honestly ask each other for forgiveness and move forward.
That may not be the case at all for you, but I hope you get your best friend back.