Big horse follows Little Girl

This is Soco a 5 year old warmblood. She is so adorable because she loves this little girl in the video. The little girl is my trainers daughter and she can't get enough of this horse. I thought this was the cutest thing ever because Soco just followed lexi (the girl) all around the ring.

Sorry for the video qualitiy it was taken on my phone.

http://www.youtube.com/watch?v=U0YQiOueF3U

Can't see it. It's set to private.