Sleeping together

Every night after the kids go to sleep I would get up and come down to turn the dish washer on and just to do the final cleaning in the kitchen.  The other day I finished all the work and came back to my room and this is what I saw.  

Awww...my heart melted seeing this.  Normally I sleep between them or if I have to get up and go I would keep a pillow between them so that George won't put his hands or legs over her.  Now that Anna is older I don't worry about such dangers.  The beauty of having them sleep with us parents.  

I just don't know whether I would ever be able to let them go sleep on their own..  I guess I am the one who is going to cry when they leave to another room.