Optimus waited impatiently, his upper back was against one of the walls of the base and his arms crossed. His pedes tapped the floor steadily. He was beginning to become exasperated with your absence. It was late enough and he knew where you were, with that... 'friend' of yours. He almost growled, he didn't know why he felt that way: jealous and possessive of you, a small human. He just couldn't help it, with that attitude of yours and everything you do; he loves you, he needs you. He perked up when he heard the tiny footsteps heading towards the control room. He walked over immediately, towering over you helplessly and sulkily.

"Where were you? You know you can't go anywhere without informing me, I'm your guardian." He growled. Of course that wasn't the reason he was angry, he wished he told you so much more, but by what right? You're human and he's an old cybertronian. But oh, the things he could do to you. If you were his, he would make you see stars as many times as you could resist.