Yesterday was my son's birthday

Yesterday was my son's birthday. He turned 5!!! I can't believe he's already that old. He's getting big WAY too fast! We had a party for him and all of his friends showed up. He was really excited. They played pin the tail on the donkey, and he was the closest! It was such a fun day. I took lots of pictures. I almost cried too, since he's growing up so fast. Have you ever cried on your children's birthday because you were sad that they were getting older? How did you deal with it? I feel as if he'll be grown before I know it, and it scares me.