Ughh oh boy

I haven’t had the best luck with boys but about three years ago i met a boy who is quite a bit older than me. He is 20 and I’m 16 but when I met him he was 17. I have a really good relationship with this boy but i slowly fell for him leaving me in a position that is very difficult. Deep down I wish we could be more than friends but I know that won’t happen so what are some ways to move on.