I was glad to see some of the casual affection the Doctor had with some previous companions finally develop with Clara. His worries about her was preventing the hand-holding and hugs he always had with everyone else.
Sure, he might be married to River, but she& also dead. I can& be the only person who noticed an awful lot of romantic tension. We know Eleven is touchy, but this stuff is just blatant. Whouffle or Clara x Eleven ftw!