Dear To him back in my high school days,

Hi S, how have you been?
It might sound a bit cliché. But, did you know that throughout our high school days, I always watched you from afar? Looking back, I was so naive to hope for your attention.
By the way, where are you studying now? York, British Columbia, or Toronto?
How is university treating you?
Do you have warm and caring friends around you?
I hope you are always healthy and surrounded by kind people.
Oh, before I close this letter. I must admit, I liked you back in high school, but I was too afraid to express it.
I hope that one day we can meet again as the best versions of ourselves.