Link to song- http://lybio.net/song-ji-eun-secret-going-crazy-english-translation/k-pop/ 

Translated lyrics from link above 

[Jieun] It’s not love
This isn’t love
It’s just your obsession
Wherever
Whatever I do
It’s frightening
The you who watches me

[Yongguk] I follow in your shadow
I make a phone call
I become thrilled at the sound of your shaking breath
My heart runs after your increasingly quick steps
I think I’ll go crazy
The long night gets darker
Under the dead streetlamp in front of your house
I’m watching you through the crack in your window
Until the night ends
Come on and find me
You keep playing a suffocating game of hide-and-seek with me
You, you, you
You’re inseparable from me

[Jieun] Have you gone crazy?
Why are you like this?
Please just leave me alone now
Seeing you is suffocating
Please disappear from my sight

[Yongguk] You can never break away from me
You have no one to love but me
Try to escape
Wherever you are
I can see you
You know deeply
You can never break away from me
You have no one to love but me
Look at me now
I don’t wanna cry no more, more

[Jieun] Get lost
Just back off
I really can’t breathe
Wherever I go
Wherever I am
It’s frightening
The you who follows me

[Yongguk] A hundred times
Tens of thousands of times
I’ve called you
But why, why is there no answer?
Did you forget?
It’s already been a thousand days since we met
I prepared a gift you’d like
I sit on the street you frequently travel
I’m waiting for you
I know my love
Don’t call it obsession, you don’t know love
Don’t say I’ve gone crazy
You don’t know my heart
You can never be separated from me

[Jieun] Have you gone crazy?
Why are you like this?
Please just leave me alone now
Seeing you is suffocating
Please disappear from my sight

[Yongguk] You know you want me too
You know you love me
Don’t run away from me
[Jieun] Cut the crap
Get a hold of yourself and stop it
Let go of me now

This ain’t right
This isn’t love
It’s just hurts me, don’t be like this
I loved you
But I don’t now
Erase me from your memory

I don’t wanna cry no more, more

Source: LYBIO.net