My now ex boyfriend

So I’ve been liking this guy since August of 2019 and I would never dare to talk to him. I would always try to talk to him about the stupidest things to try and get closer to him. We were about to go on a break so I decided to tell him in a note and friend gave to him with my number (like I said I wouldn’t dare to talk to him or face him) after a while it was our last class (the only class we have together) my friend threaded me to tell him who I was like the childish person she is. My mentality at that time was “I have to tell him myself before anyone else does” so I did. I got up and went up to him and told him. He didn’t say anything since he is shy and socially awkard. We then started talking but he went to Japan during the break so the time was very different (he is Japanese btw) after a while he asked me to be his gf! Everything was going well until we hid a month. Since he is asian the pressure of his parents wanting him to do well in school and wanting him to do work early so he can get into a good college grew more. He is also not allowed to have a girlfriend until he finishes high school. I told my friend who was also his friend to text him and find out what was going on. He said that he loves me and that He wants her (my friend) to respect his decision. He the wrote a long paragraph and gave it to me (a break up note) he said that he loves me and that he wants me to wait for him. The thing is that the day after he looked so happy so that didn’t help. I cried for a week straight, just thinking about it a month later makes me sad... what should I do? I always felt like he didn’t felt the same way but at the same time I was his first girlfriend and he didn’t know how to express his feelings... help?