BTOB Father English Translation

Someone help me finish/edit this ;u; PLEASE

With his back to me, I couldn't recognize

I just looked at him while he was passing by

And my tears they start to fall, because I hated most of all

That I, myself, don't even know what's wrong

And in front of me, he always tends to smile

I didn't knew he kept the pain inside

I didn't think of how he felt, I always only saw myself

So I didn't even know that there was something wrong

I didn't know you were so tired from all, you're hurt

I didn't know you're feeling all alone

My attention towards you was gone

That's all I got ; 3 ;