"I do. Helpfully, he described it to me." Erik is trying not to seem overly suspicious, but yes, there is that whole dating part, which covers much of why he's so interested. That and the man's name kept popping up unsolicited. Since Erik likes to make a point of knowing what he can about influential people, influential mutants are not only a novelty but a priority.

The train begins a gentle northward turn, then, and Erik lifts his head to glimpse the passing landscape, mildly interested and for a moment seeming untroubled. The expression is brief... and as his attention leaves the window again, it seeks to lock into contact with that of his accomplice.

"So why exactly are you being so helpful, John?"

The clear blue of his eyes. His gaze is steady, serious, but not unkind.