"Is it nice or frustrating when she does that?" he asks curiously. She says girlfriend, so he has to expect she's not going to be particularly bothered by the idea of what he and Matthias are to each other. "Worry without trying to let on that she's worrying."

He's not sure how he feels about it himself. When Matthias worries about him, Marcus wants to tell him not to bother. He's been through so much and he knows how to keep himself safe, having someone worry about him seems like such an odd thing, something he doesn't know how to deal with most of the time. So it frustrates him sometimes and he wants to feel less like someone think they need to keep himself.

But at the same time it's not something he's ever had before. It's rather nice.