He's been back and forth in time. This most recent jaunt has left him with two sets of memories - a set from a future where Jean is dead by his hand in order to save the world from destruction and a set from a future where none of that happened. He has a set of memories from a world where Sentinels hunt them all down and they're only one step ahead of death at any given moment and a future where Trask's program never got off the ground.

His brain's a goddamn minefield and Jean, at least, has the decency to keep out of his head unlike Charles. He closes his eyes and makes a low, guttural sound beneath his breath.

"Look, I need a hell of a lot stronger alcohol than this place has to explain this shit to you. Of course I know who you are. You're the cause of every headache I've ever had. Did Pretty Boy come along with you?"