No idea the title is...

you, who's walking with me
engrossed in thought
with my fluttering heart
I secretly stare at you
while I put you inside my heart
I guess it must be love
I cannot explain this with any other words
so that this road we walk together
won't just end up as a memory again
I'll keep it safe, just like today
I should have saved the words, "I love you"
how should I express my feelings now?
even in everything changes
I'll love you with these feelings of mine
did you hesitate?
is it still hard for you to accept me?
don't try so hard to forget about the love that's left you
since I'll wait for you until then...


PS.
taken from a korean drama : high kick through the roof ep. 123
the sad goodbye scene between jun hyuk and shin se kyung
no idea what the title of the song is