You couldn’t move on from your pain so you brought it back home to be with it. In doing so you made it so your son could never move on. And the guilt of surviving, survivor’s guilt, literally ate away at him until he felt that should embrace. You set your son up for failure by making him believe he should become one with his guilt, by having it always there in your backyard. 1. Move the bodies out of your backyard , 2. Get both of you some therapy , 3. Don’t shame him for his grief guilt.