I can feel your pain, having found my beloved 6 year old dog drowned at a neighbour's property, six days after running away with his brother.
I read once, that when your dog dies, part of your life goes with him, how true. The remaining dog is still depressed and fretting for his companion, I was in tears every day, I did a lot of googling and fell in love again - with a pup of the same breed, advertised at this website.
How easy was that?? The puppy, to my surprise, is very similar to my wasted friend. Maybe, you too, will in the future be able to have a dog you can love again, I hope for you.