Memory's Reconfiguration?

"Tell her you love her when you can.
And tell her a lot.
To mom and to the one you love.
Later, a day will come when even if you want you won't be able to remember.
Why are you trying to erase those precious memories?
Even if he can't be yours, say you love him when you do and at least that memory will be yours."

[Korean Drama: Get Karl! Oh Soo Jung, episod 14]