He takes the water back from John, watching the quirk of a smile on the other man's face, his mind continuing to play back to bits and pieces of conversations between them from earlier in the day. He has to keep reminding himself it was only just a few hours ago.

Ianto meets the other man's gaze, quirking something of an eyebrow at the suggestion before shrugging a shoulder at him in turn. "I suppose that we could," he allows the other man, watching him from over the edge of the water bottle as he raises it to his lips. Calmly taking a sip from it as he adds, "It would bring out my eyes."

Two can play at this game, John.