Well that would be consistent with what tended to happen at Vas Captio. Jack thought of the morning buffet and how food had turned to ash after leaving the room. It was the day Ianto had left that cryptic message for Jack to decipher, with Jack adding his own words of love to the mix. He had been forgiven, so Jack figured he was allowed the sappiness.
In truth, Jack wondered how much a clone could know about him. Memories and facts were one thing, but to know how a person would react was another entirely. "It's a start," Jack replied softly. "I've never been one for admitting things either. If it were specific, what would it be?"
Because Jack wanted to know if this was a clone or not. And he knew that Ianto would know the right thing to say to turn him into a believer.