Teach me how to smile

She loves him, therefore she leaves him
He loves her, and so he let her go
They say separation is the will from an individual, and the coordination from two individuals

You used to say I make you smile
Honestly, you make me smile, too
As much as you smile at my smiling
And with you walking away from my life, and taking my smile away with you
I forgot how to smile, teach me how to smile

I thought I'm able to cope, but I failed tremendously
I thought I wouldn't have tears, but just the thought failed me almost instantaneously
I thought the love is not that deep, but the truth is often the toughest pain

Again, teach me how to smile, when the only thing I want to do is to cry