Favorite mushy scene...
I like in series 4, episode 4, when Tom helps Diana get out of of the brawl, and she says thank you, to which he replied "My pleasure, madam." Then, she stares at him for a second and then pulls him close with her cane while saying "Come here!" and they kiss! I also like in the very last episode, when she looks into his eyes and says "I adore you." There's something about her voice that makes her few tender moments all the more sensual. Anyone else agree?