you led him on, sleeping ( I realize you don't imply sex at all here) with him and holding his hand. Now you are trying to place a lot of blame on the young man for falling for you and make him out to be the doing something bad. You got involved with a teenage (and in my country, underage) child as an adult.

I'm not sure where the confusion is on your part although I can quite easily understand why he is confused now. Women that I know don't typically hold hands with a male "friend" without any interest in that male other than a father or sometimes, a sibling.

you need to walk away, leave this kid to be with friends that are also children and move on.