I dont know what to do in this situation with this boy?

Like in the previous question i talked about a guy named bob well now i decided to go with him and i am nervous and dont know what to do. everyone say because of his autism and lack of social skills he isnt ready. (my step mom said what a hug feels like to us is over whelming to people with autism no matter how sever) so i wanna tell him but i would rather him tell me first. and i am scared that i might do something (like kiss him) and make this awkward and might ruin the friendship. (i have a feeling that our friendship will become more or "stronger" this summer in the mission trip.) what do i do? please help.