You worked for Starscream, helping him on assignments and just with paperwork.

One day you were cleaning his room and saw a photos...You picked them up and saw a photo of some sparkling- Was it Starscream?!

These were his childhood photos.

On one photo he was sitting and holding some toy.

On another one he was smiling at the camera while chewing on his servo.

You kept them for yourself, maybe you can tease him a little later.