Who said "Real friendship means being there even when it's hard."?

This quote is attributed to Agent Coulson.

Real friendship means being there even when it's hard. - Agent Coulson

"Real friendship means being there even when it's hard."

Agent Coulson Friendship

"I'm sorry, the god of Thunder lost his hammer and apparently nobody saw that coming."

"There's no such thing as coincidence. Only the inevitable."

"I've always admired your confidence. Not always your judgment, but your confidence."

"Big man in a suit of armour. Take that off, what are you?"

"Friendship is built on trust and honesty."

"True friendship is worth more than gold."

"Good friends are like stars, always there even when you can't see them."

"Friendship means sacrifice."