I've said before and will say again, there's something special between James and Amelia. It's almost as if they're twins and Maddie just happens to be the same age as them. I don't know if it's something we've perpetuated, but they interact in a different way than either one does with Maddie. I love watching the way they blow raspberries at one another, hold hands, giggle, look at one another, and steal toys/food from one another. These two are so funny.
I should have taken video, but here are a few photos taken in succession to demonstrate their playfulness towards one another.