It sounds as if you are at the beginning of a long life journey that will bring you both pleasure and pain. Perhaps this boy thinks of you as a friend, or maybe as a girlfriend. I honestly cannot tell.
The best advice I can give you is to enjoy the attention, but don't let it detract from your studies. Believe me, in ten years time, you won't even remember these events, but your exam results will stay with you for the rest of your life.
There is nothing wrong with enjoying the first throes of young love. However, you must stay focused and prioritize what your long-term goals are.