[A few people who wouldn't take it so well are already coming to mind for Marco. Let's hope for their sake they won't end up here as well.]

Heh, don't worry. I'm not the kind of guy who freaks out easily. If there's any more truths you were holding back, now would be the time to share. [While he's trying to make a bit of a joke of it, he is serious about the sharing thing. It's better to be prepared for the worst.]