I sorted out my documents in my old computer which I haven't used for years a few days ago.I happened to find a song which recorded by my first boyfriend who was also a best friend of mine.I kept listening to it a couple of times ,wondering about the our good old days and things we went through.I figured out I just remembered those good things and happy times.
We never expected that now we only sent a send messages  to say happy birthday to each other every year even if we are living in the same city.
Just like the lyrics of the song ,"what will never change is change itself".
Wish you all the best .

Notes:
Well written!! I appreciate the feeling of longing and sweet sadness that we can't avoid change.