He visibly brightens at that, takes another sip of the water before re-capping it and handing it back to Ianto.

"Should we find you a blue dress?"

You know, so he can be Wendy -- although the playful twitch of John's lips suggests he might not be entirely serious about this question. Ianto didn't like jokes about him being feminine before, so he probably shouldn't push this one too far either.