HELP ME! (Troubles)

I mm in high school if anyone was wondering and so this guy likes me but I feel like school is for education and friends not for boyfriends and girlfriends etc. And he was being so nice and I don’t know how to say no without him being sad. ( He also bought me stuff that didn’t ask for be he still bought it for me ) but I just don’t feel that way about him and I don’t want to date in high school because you’re there to learn.

IF ANYONE KNOWS ANYTHING THAT WILL HELP PLEASE COMMENT THANKS XX