One of my favorite things: Peeking at them when they play together. I love to peek around corners or hide behind something and just watch/listen to them playing. I'm sure the fighting will be here and there, as it is now, but they love each other so much. They usually are trying to make each other laugh in some way. They dance together, sing together, ride bikes together, even save each other from the lava at the bottom of the slide. It truly warms my heart and makes me feel like a child again with them.
Yesterday, I didn't have my camera on me and I didn't want to miss the moment while I went looking for it but, they were outside playing together sitting on this "Sit-n-Spin" thing and grabbing each others cheeks and making funny faces on each other. Even through the closed door I could hear them belly laughing. They really are best friends. I hope as their relationship grows they will just become closer and closer.