impending death and other misunderstandings

I just came from putting @ to bed. I normally laydown with him in bed for an extra minute or two. He likes a little one on one snuggle time with each of us at bedtime. Maybe its a stall but I'll take the snuggle where I can get it. Normally he'll talk over something with us that has been on his mind. Something Cleo said to Clifford or a joke Pig made on Word World. In January it was concern over going back to America. He decided he didn't want to go to America and was under the impression that we were going tomorrow. We had quite a few friends coming and going from the states the months of December and January and somehow he got it in his head that we must be going too. And he didn't want to. This was a source of major concern for him and each day found us reassuring him multiple times that we were staying at home here for a long time "a lot of days @". So we put to bed the worry about moving to America and now I'm wishing for it to come back. Tonight the new concern surfaced "Am I going to die?" I told him that everybody dies, that's what happens but if we love Jesus then we get to go be with Him and that's great...
"Not for a long time?" A long time from now. And then after a minute or 2, he starts sniffling and then bursts into full fledge tears. "But I don't want to die. I don't want to be old. I don't want you to die. Can you pray and ask God to not let me die?" You can tell me a million different things I should have said but I was stumped as to how we got to "I don't want to die." Sigh... so we snuggled a bit longer until the tears passed and we prayed again. Now Jonathan is "bringing him a glass of water" (@'s stall whereby daddy comes in for a snuggle). I directed Jonathan to skip talking about death...