K.D.
What I had always heard is that there are *some, special* things that they should be allowed to NOT have to share. A privilege of life is having at least a few coveted items you can call your OWN and not have to share (for instance, my diamond ring, my car, noone's gonna borrow THOSE! LOL) Perhaps if you kinda go through some of his special things with him, you and he can pick out what he likes most, say, 5 or 10 things, and THOSE can be the things he doesn't have to share. Then he can learn that it's okay to share most things, cause you will get them back, yet you don't have to panic and have your special things going around to other people. I hope that helps, it seems like it may at least?!