A stupid girl falling for a guy's kind words and actions and end up getting hurt like a fool

There is one guy who I sat beside me at the beginning of the semester. He was like a complete white paper and did not even have the basic or simplest knowledge about English grammar. So I started teaching him and lending my notes to him. He was very grateful and asked me for my Email account so that we could keep in touch and also to ask me questions. You must be wondering why Email, sadly I did not have a phone and I could only access to my Email account using the house computer. I remembered during the exams period he emailed me to tell me not to work so hard, drink more water and do not fall sick. He also told me to get some more rest and not to be stressed. Although that did make me feel warm but my feelings were not yet in their prime yet. So these warm advices keep flowing in and I keep receiving it, he keep asking me to teach him homework and asked whether he could come by my house to study together, but I was not particularly comfortable with him yet so I rejected them all. At school, friends around me started making a fuss over the close relationship between me and him, they said that he confessed that he thought I was very cute and bright, thus his actions looked shy and embarrassed which they speculated that he might like me. That was when I started had expectations towards him. After some more warm emails and rumours about us, I started to always notice him around at school and taking more glances at him than usual. Whenever he looked close to other girls, I felt really angry; whenever I met him, my face will flush red and become really flustered. Things were very murky and he did not seem to want to draw an exact line over what our relationship belongs to: friend or lover? Then came to the time when I hurt my knee in a basketball tournament, and needed to move around in a wheelchair in school after a surgery. I was really down and asked him to help take my homework and bring it to my house. He sounded really concerned and he asked about my conditions worriedly. When I told him I would be going to school 2 days after my surgery, he urged me not to come and to rest for few more days and told me not to worry for the homework as he would bring them to my house for me which made me feel certain about his feelings to me. While i was getting used to the wheelchair, suddenly a supposedly to be the most pretty girl in my year group started to make moves on him by calling his name ever so sweetly and flirt excessively to him, but what was really got me hurt was the fact that he was actually enjoying it a little bit too much. Then I remembered how she was just talking about me and his relationship during class the other day, about how lucky I was to be able to capture supposedly the most handsome guy in our school and I remembered faintly about how she joked that he would have be in her hands if she worked her magic on him. After that incident, suddenly she was coming onto him like a hungry beast wanting his attention while enjoyment was written on his face. That was when he started to send me less and less emails, when he asked me to teach him, he wanted to go somewhere no one could see us, like he was embarrassed for us to be seen studying together. Then, he slowly did not even bother to ask about my conditions or send me emails anymore. That was when I started to get really worked up and a little bit obsessed about how could he change his attitude so quick. When I found no emails were in my inbox from him, I became desperate to the extent of asking if he was doing okay for his exams, whether he needed help or anything , which the replies always to be a short yes, no or thank you for your concern. I would also make tons of notes for him before exams. Other than that, he did not send me emails anymore. At a school trip, I accidentally overheard his conversation with a friend, which the friend asked whether he has ever liked the pretty girl before, which he replied to be yes for a short while. The short while i assumed was to be the time when he did not send emails to me as I guessed he was busy hooking with her. That was when I got really heartbroken but my friends told me that perhaps I was the one who misunderstood his intention behind his words to me, maybe he was this nice to every other girls as well, and that I got the wrong idea as I had never receive these kinds of words from a guy friend ever before. Then I fell into a serious slump when I would drop tears every night and had trouble sleeping thinking about how stupid I was. I deleted all our emails and swore that I would not talk to him ever again. But the trouble did not end there as after I got well and out of the wheelchair, he started to send me emails again, asking if he can get help from me for his studies and whether if he could come to my house again to have one to one tutor. That was when I realized that this guy must belong to either one of the categories: a guy whose words are kind enough to make people misunderstand, a guy whose only intention for his kind words was to make me help his studies or a jerk who liked to use kind words to lure me in helping his studies. But looking back, the whole main culprit for all this drama was me myself, if I had not misunderstood his intention and just treated him like a friend, if I had not assume he liked me and let my feelings go beyond my control, I would not be as heartbroken as I am now. To sum up, I was just an idiot when it comes to guessing guys' intentions for their kind actions. Soon summer break will be over, hopefully I could ignore him and also my feelings and completely get over him as fast as I could. What should I do next?