How much do you let other people touch your child?

I am a first time mom and I am just looking for a frame of reference.​We go to the same grocery store all the time and most of the people recognize us and vice versa. There is one clerk in particular we will have occasional conversations with and will occasionally chat about mundane aspects of our lives (comparing notes on raising children, etc.) He has a daughter who is only a few months younger than my son. I've never met her before, but I have heard the other clerks talk about her coming around. Beyond that, I know nothing about him and vice versa.​He does little things like high fiving my son, scratching his head, and will ask the routine questions about "is that superman on your shirt".​My son doesn't seem uncomfortable and it's not like the guy is just picking him up in a big bear hug or anything, but on some level I wonder if I am being too permissive when it comes to interactions or if I am just being paranoid and overthinking things. I started thinking about it because I noticed that even my husband's co-workers that we see when we have lunch with hubby don't even interact with him like this. They usually say hello, ask about the character on his shirt, but other than that, don't try to pat his head or things like that.​Do you let acquaintances (people you see on a routine basis, but don't know that well) do stuff like this or do you prefer that they keep their distance? via /r/Parenting https://ift.tt/2CWmrS0