Tonight Charlie was in the bathtub and I was sitting on the floor next to it with Teddy on my lap. Teddy was watching Charlie very intently when Charlie looked over and started smiling. Teddy got really excited and started grinning and then Charlie got excited and started babbling at Teddy and Teddy started cooing back and they were really interacting and having fun with each other for the first time. It gave me the most wonderful feeling ever. I started crying.