Orion hadn't yet noticed how his behavior might be interpreted. But then again, he never did. It was simply polite to offer a date your arm or other contact varied for scale. The fact that he enjoyed it as well was only a bonus.

The same way that feeling Megatron's bulk under his own weight was only the bonus of being high enough to kiss him.

Orion purred, helm tilting into the kiss, testing and exploring, getting acclimated to the feel of a new partner. His own attraction to the huge mech, carefully controlled and contained throughout their long months of acquaintance, was finally coming free. His field licked out gently, just as his tongue did, teasing out charge.