Young love / First love, then after many years

Is my title hard to understand?
Have seen:
Autumn's Tale (2000?)
I Miss You
The Classic (movie)

I think these are along the lines of your title, check out the pages and see if you're interested!

http://mydramalist.com/8911-cunning-single-lady
http://mydramalist.com/9849-discovery-of-romance
http://mydramalist.com/3079-the-moon-that-embraces...
http://mydramalist.com/8550-emergency-couple
http://mydramalist.com/13404-ex-girlfriend-club
http://mydramalist.com/4689-reply-1997
http://mydramalist.com/6753-reply-1994
http://mydramalist.com/81-autumns-concerto
http://mydramalist.com/54-hi-my-sweetheart
http://mydramalist.com/9137-my-sunshine

I Hear Your Voice

The currently airing She Was Pretty is like that.

Also I Need Romance 2 and 3, Discovery of Romance, and The Time We Were Not in Love.

These are all some of my favorites. I love those kind of romances!