The latest article on Pang/Tong's website says that they feel energized by having received the record LP score at the Olympics, and they feel more motivated than ever to continue skating!
She also revealed that they will celebrate Valentine's Day together for the first time next year, because this year he didn't express his feelings for her until after V Day.
Given that Pairs SP was on 02/14, and LP was on 02/15, I think this is consistent with my hypothesis that he told her shortly before the LP, and that's why she smiled so happily throughout that whole program and was so relaxed.
Maybe he should propose to her just before World's, and then they can win gold there? Haha.
They're just the sweetest couple!