From this work, I get the sneaking feeling that she's trying to protect him. By his look, I get the feeling that he's trying to protect her. I also get the feeling that they are holding secrets from each other. That's just my thoughts though. I also get the feeling that they're in a secret company/society/group and they both have jobs that they can't talk about even though they work for the same people. Nice for catching all these things even if you didn't mean to. Such a story behind these two. THIS IS SO NICE!!
The Guy tires to protect the girl, but she doesn't need any protection. She knows what he does for a living, however he has no idea what she does, just that she can handle herself quite well and that she can turn up anywhere in the world.