You could argue Temmy took a shine to Robyn specifically because he didn't chase after her like most other cats, but she seemed interested in him even before that.

He finds her a little offputting...but he can't act like she's not cute (nor stop her from becoming a part of his inner circle).

Robyn always assumed his crush was one-sided or even remotely subtle, up until he was informed snakes don't usually wrap around their roommates for warmth.

Nathan himself is enjoying winters much more...and finally gets why everyone finds cats so cute.