Is my friends dad interested in me?

I'm 16 and a boy, my friends dad is 54. He is engaged but many actions of his have left me curious. He is constantly winking at me, eye contact...ext. Many times he will put his hand on my back, rub my head, put his hand on my shoulder. Constantly touching me but not in a bad way. He generally just enjoys my company I can tell. But I feel like that some of this is a little more than just a friends dad. I'm really confused but curious.