Lost my friend to depression

One of my good friends took his life 3 days ago. He had come to my husband and I about a month ago for help. He had always struggled with depression, and he had been there for me when I had my bouts of serious depression. I recently had begun to recover, so he turned to me for help. This past month I talked to him for hours, got him professional help with one of my therapists, hung out at the river, had a bbq at our house (we made terrible burgers that fell apart, but tasted good), watched shows and movies together, and had long talks into the night all to help him through this difficult time. When all of us (my husband, I, and his close friends) heard about his death on sunday we all fell apart. He was one of my husband's best friends, and it hurts to see my husband struggle with such a loss. His death has been devestating for all of us, especially for his wife, which we are all surrounding her with support right now. I am so sad, and I miss him so much. I felt myself slipping back into my depressive thoughts and feelings, but today I feel stronger. I also have a lot of support from my husband, family, friends and I am continuing in my therapy which will help tremendously. I will always miss my friend. <3