And he's very interested and a little amused and completely smitten with the conversation and how much feeling the elephant seems to have engendered within her in such a short period of time, even though it's honestly not a subject he can say he ever would have thought himself having a conversation about. Perhaps that's where the smitten comes in a bit.

Jenny's reaction to the flat's interior decor is similarly mixed-feelings time. Very happy she's so enthusiastic about... apparently everything, but she really never had gotten the chance to see the TARDIS properly, had she? But it's the mixed feelings and the general shock of seeing her still that mean he looks over at Rose and notices just then that she was apparently just standing in the living room. Maybe she was pretending she was in the console room. He's done that a few times since they painted it. 'Rose! You two have apparently already met. Look! Jenny!'