Optimus was walking to your quarter to make sure you were still there after your disappearance for months it's just about thinking that you would leave again

He open the door to your quarters see a sparkling resting on your bed where you should be you have been get more energon he scooped up the sparkling looking at it realizing it looked a lot like him. He walked added reporters and decided to hold on to the sparkling for a bit just to mess with you