He's thankful for it, really. The humans in his world were less than friendly, and having to explain that he's not out to kill her was a step he was glad to avoid. If she wouldn't question it, he wouldn't.

His hand lifts, moving it up to the shoulder area so she can jump on, hoping the distance isn't too great for her. It'd be strange having a human so close to him, but...

She seemed to be alright with this. Every being deserves a chance and not everyone is Spike.

"I am an Autobot. We fight for the freedom of all sentient beings of the galaxy, and for ourselves."