"Well... we've only just met." He pauses along with her and glances toward the trees. "And the circumstances are kind of awful. But... y'know? No harm in trying to make the best of it. I mean, as long as you're okay with that. Sorry. We don't have to talk. I don't have to talk."

It's been too long since he's had to act like a normal person. He's probably mucking it up royally. Is he being creepy? It's probably creepy. Martin makes an effort to slouch a bit more to seem smaller. He knows he's pretty big and that can put some people off.