Dean smiled contentedly and nudged against Seamus' slumped form, just to affirm his presence.
He gave an absolutely delighted chuckle at Seamus'response and stuck his tongue out. "I saw an opportunity to make a terrible joke, so sue me!" he said. His short stay on the Quidditch team hadn't exactly cured him of his urge to make dirty jokes about riding brooms/players. Some things just could not be helped. Plus Seamus had told them all when he was on the team. Most of them more than once. Dean idly wondered if it would have been worse if they had both been out then. Or more awkward. In his meandering thoughts Seamus' had clearly moved on again. Or back as the case may be.
Dean made a half-hearted prod for the dish Seamus was moving with his fork, but didn't actually come close to either Seamus' hand or the food. He listened to Seamus planning and was reminded, as he occasionally was, that unlike his vague Hufflepuff sensibilities Seamus had almost been put into Ravenclaw. He made appropriate hmms of agreement as he picked idly at another plate. "Sure that could work, plus the charity thing is always good."