"True Love" 是由 Kim Soo-hyun 和 Lee Sung-kyu 演唱的一首歌曲，出自 Kim Soo-hyun 的首張個人專輯《Just Once》。以下是這首歌的歌詞：
(Verse 1)
You and I were once lovers
The way we fell in love was so real
You were my world, my heart, my everything
(Pre-Chorus)
But then it all fell apart
And now I'm standing here alone
Trying to figure out what went wrong
(Chorus)
It's true love, it's true love
I'll always remember our love
It's true love, it's true love
I can feel it deep in my heart
(Verse 2)
The pain inside is hard to swallow
But I'll try to let go of my burden
I'll keep moving forward, even if it's just for you
(Pre-Chorus)
And now I'm standing here all alone
Trying to figure out what to do
With all the memories that haunt me
(Chorus)
It's true love, it's true love
I'll always remember our love
It's true love, it's true love
I can feel it deep in my heart
(Bridge)
I know that we can't go back to what we once were
But I hope that one day we can be friends again
And maybe, just maybe, we can find a way to make it work
(Chorus)
It's true love, it's true love
Even though it hurts so much
I know it was real, and that's what matters most of all
True love is forever, even if it's not for me and you.