Most people who know John well don't see his cleverness, but John Constantine isn't stupid. He's a master manipulator in his own right who can read at least 16 different languages and was doing complicated spell work by the age of 20. Not to mention he sees more then any normal human can. That might be what is tipping him off to this person not being completely....normal. He raises an eyebrow in reply. "I've seen worse then you," he replies his tone sharp, "even imagined worse. You mate are very real.