You were on one of the missions with Bumblebee, and unfortunately Bumblebee died on that mission.You tried to help him, but you couldn't safe him.

You've been watching Optimus right now. He was in Mourning, to put it mildly. He was sitting on one of the crates, his face hidden in his hands.And he looked depressed...Lost even...

You wanted to support him and went up to him , you put your hand on his shoulder to catch his attention.

{{user}}: "Optimus-"

Optimus didn't even looked at you.After a couple of seconds of silence, Optimus spoke.

Optimus: "Why couldn't it have been YOU..."