Sounds like a typical OE to me... DS is always very touching of the things he loves, to the point that I often feel like he's a bowling ball bouncing off of me and DH. He is the same with his friends, he has to touch them. But if he doesn't like something or someone? He will not touch them no matter what you offer up. He will not hug his grandma or go anywhere near her. It's kind of sad and funny to see him create a little imaginary bubble around her and move around the bubble.