((((whyamihere)))
God, I know that must have been hard for you. But you were there for him! He trusted you so, hopefully he wasn't scared.
I had a dog from the time I was 14 until I was 29. We grew up together, it was hard to let him go. Mercifully, he just barked once and fell over dead--apparent heart attack or something. One minute he was there, and the next he was gone. I used to talk to that dog about everything!!! He actually understood when I got df'd and gave me extra soulful eyes and sat in my lap.
When you feel like it, talk about him. It will help gel the fond memories and make it a little easier to let go.
Dogs are great. There's nothing like them. (I"ll tell y'all about my cat from hell later)