Seriously speaking, all of us said...
"I understand you."
But the truth is, we can't.
We can't understand each other.
Maybe your situation, resembles to her/his situation...
But tell me honestly...
Do you know what she/he was feeling?
You would say yes, right?
Because you've been there. You felt it ahead before she/he felt it.
But, do you know how intense the situation is? Or how she/he was coping up with the situation she/he's in?
Of course not.
She/He's not you.
All of us have their own identity. That's what makes the human being unique from others.
We have our individuality.
So, I'll ask again...
Do you understand her/him?
Of course, it's not.
There are some things that you really don't understand.