It surprises him - there's no chance that it wouldn't. His joints go still as his processor rushes to keep up, his spark feeling warm in his chest. He's never had the opportunity to contemplate what he would do in this situation. He'd thought about it with someone else, what felt like ages previous.

In the end he doesn't end up thinking much at all.

Unsure of how to handle himself, he leans down gently, pressing into her kiss ever so slightly. His hands feel far too large to do anything with, too clumsy for someone of her size, but he finds his fingers resting against the casing of her chest, above her spark.