[TV Version]

But I know that you're fighting to hold back your tears all this time
To the point that your chest may burst from the pain

Even when you act tough just by looking into your eyes
I'd know right away, because You're my boyfriend
So you can lean on me

Your feelings have reached me
They are echoing deep inside my heart
You don't have to put them into words
I know your heart and I'll be with you

Though we may be far apart right now
I can hear the voice of your heart
I understand even if you don't put them into words
Forever, because You're my best friend

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[Full Version]

I want to understand everything about you
Even when it hurts inside you still try to hide it with your usual smile

But I know that you're fighting to hold back your tears all this time
To the point that your chest may burst from the pain

Even when you act tough just by looking into your eyes
I'd know right away, because You're my boyfriend
So you can lean on me

Your feelings have reached me
They are echoing deep inside my heart
You don't have to put them into words
I know your heart and I'll be with you

Though we may be far apart right now
I can hear the voice of your heart
I understand even if you don't put them into words
Forever, because You're my boyfriend

Girl I know everything about you
Girl I know everything you think
Your heart, ever criticizing yourself

And I know all this time
You've been trying not to show your tears
Even when you're choked with insecurity

You must be acting tough just by looking into your eyes
I'd know right away, because You're my best friend
So you can lean on me

Your feelings have reached me
They are echoing deep inside my heart
You don't have to put them into words
I know your heart and I'll be with you

Though we may be far apart right now
I can hear the voice of your heart
I understand even if you don't put them into words
Forever, because You're my best friend

Our hearts are linked by telepathy
There is nothing that can tear us apart
I will continue thinking about you wherever I may be
Because our hearts are one

Yes I know everything about you
And you know everything about me
We can hold on because we trust each other
So you can lean on me

Your feelings have reached me
They are echoing deep inside my heart
You don't have to put them into words
I know your heart and I'll be with you

Though we may be far apart
I can hear the voice of your heart
I understand even if you don't put them into words
Forever, because You're my best friend

I can feel you Ah
Can you feel me? Ah
I can feel you Ah
Can you feel me? Ah
I can feel you Ah
Can you feel me? Ah
I can feel you Ah
Can you feel me? Ah