Theo didn't like that Greg didn't look happy - it made him feel tense and anxious and his hands curled a little more protective, a little more defensive on Greg's shoulders until those hands came back, touched him, and then they flexed open and vulnerable before curling into fists, mirroring the next little intake of breath Theo took between his teeth, Greg's questing teasing fingers there making the anxiety in him spike.
He gritted his teeth a little bit but then Greg was speaking to him and he hated that look, that worry. He bit at his lip and then spoke, the whole thin length of him trembling like a whippet; 'I'm scared' he wanted to say, but he knew better than to voice a weakness, and quite besides that, he didn't want to put a stop to this thing that Greg wanted. "Feels strange." he breathed, honest, fingers uncurling from the fists to flutter against Greg's shoulders, colour coming high in his cheeks.