Feelings are actually very simple to outsiders, because we all just say suggestions and don't need to implement them. You actually cleared your mind. Love is based on mutual admiration, and gradually develops with the sense of ideological dependence. Ask yourself how you feel about him first. Do you think of him from time to time? This kind of thinking is unconscious. If so, you're starting to have feelings for him. If not, just wait and see. At present, from your description, he has a good impression on you, but it may not continue to show because of distance and life. You can tentatively ask him about his contact with other high school students, and you should be able to see some clues. In fact, in any case, you only need to start from yourself, and you will become positive. If you feel a little, want to develop, then try to increase the communication time with him and verify whether he is the person you like. If not, just wait for him! Sometimes love comes too suddenly, which will make people unprepared, but you won't be confused if you know your pursuit of love. I wish you find the right person soon.