No one ever said Marco was a good liar! Least of all Marco himself.

Viola gives a concerned chatter at Jean's reaction, worried about him. Marco puts a hand on her back, trying to soothe her.

"I know," he says softly. He knows that Jean is worried about him and has every right to be. "I realize you have concerns and I am not trying to dismiss them... but I'd like to explore this place, on my own."

It is not that he doesn't appreciate Jean's help. God knows that he does. There are just some things one needs to do themselves.