You can give him the kiss if you are sure that you want to and if he is of the right age. Be sure of your feelings towards him to ensure that there are no disappointments in future. Age is also important to avoid any violation of laws on minors.
Do you like him enough to kiss him. He obviously has strong feelings for you. If you don't, then don't do it. It will give him the impression that you want to be his girl. A first kiss is special and it has to be mutual.