THIS. This is why Rose will always be the Doctor’s one true love. Because this isn’t the Doctor that just experienced losing Rose a couple of years previous. This is the Doctor having lost Rose 200 years ago in his timeline. The fact that he still speaks of Rose, and wanting to see her again, should tell everyone that he still loves her. And he wants to see her—literally in his last moments, even if it’s something as simple as helping her with her homework. Because in reality, he wouldn’t be helping her, she would be helping him. And she wouldn’t even know the better.