The show is — a bit weirdly — playing Sansa and Jon’s scenes as if they’re a romantic couple waiting to happen. (People keep doubting me on this, but seriously, compare their scenes to the way the season two scenes between Talisa and Robb were shot.)
Bitty spends so much of the year alone. Kent Parson suggests he adopts a pet. He may strongly suggest a cat. One may (or may not) show up.