Fussy Cousin

I have a little cousin who just recently turned one. He can walk, but can only say a few words. Over Christmas I was really excited to see him and play with him, but was disappointed when he would only stay close to those who he knew well. This displays the attachement bond and he always wanted to be with a primary caregiver. Once in the arms of his grandpa, grandma, or mother, he would loosen up and allow me to touch him, but not hold him. This also shows separation distress because he would cry or fuss if me or another unfamiliar person tried to pick him up. I'm hoping next year he'll be a better sport and get to know me!