I feel for you - You're like 'man, I know exactly what you're going through'

You're like 'man, I know exactly what you're going through' and you mean it with all your heart.

I get where you're coming from. You got called a f***head in math class.

I get where you're coming from. I got called a f***head in math class.

I get where you're coming from. Your teacher called you a f***head.