Tonight when it was bedtime we asked Anna who we wanted to tuck her in. She told us she wanted Isaac. This isn't a first as she picks Isaac every now and again. Isaac got up and walked with her hand in hand to her bedroom. He was kind of taking a while in there so I snuck over to check on them. I looked in and listened to Isaac whisper, "goodnight, ok. See you the next day". He gave her a kiss and walked out. My heart melted.