Dear …
If you would let me in and talk to me again, perhaps I really could be the one you thought I could be.
I'm sorry that I didn't think I was good enough to talk to you all those times, but you should know, you made my day each time you did. I wish I could get the courage to actually talk to you again but you make it so awkward (definitely not on purpose because that's not like you at all) with your gf and yet I still hope you like me even though you obviously care a lot for her, which makes me like you even more, because I can see that you respect her, and I wish someone would think I was amazing like you think she is.
It's been so long but I think about you each day. I hope I can meet someone that's as awesome and nice like you are someday.
I might sound a bit dramatic but you meant more to me than you ever thought.
Just remember I'm still here if you still need me, I always will be, but it looks like everything is finally going good for you and I hope you stay happy.
Signed
Hopefully a good friend+
P.S. If I can still help and you know how, I will