As Luke says that Jen wanted to live rather than hide or die, he essentially realizes that hiding isn’t truly living. So in this sense, he comes to finally agree with Jen: he can’t spend his whole life in hiding. Things get more complicated, though, as Jen’s dad explains the trouble Luke is in and that he works for the Population Police. However, it’s interesting that he offers to get Luke a fake ID despite working for the organization designed to murder kids like Luke—he’s protesting an inhumane system in his own way.