"No!" Thomas said to Jamie, because he couldn't control it. "I can't help it, my grin is not under my control." Theseus had taken hold of Jamie's hand and Thomas wanted to squeal and hug them both. He figured that would most certainly not be okay though, so he refrained though he did put his hand over his heart without realising it. His little boy!
"Everything's fine, don't you mind me!" he replied to Theseus. "I'll just go back to my room there and you can just...do whatever!" Thomas shook his hands at them.