Guy who's bad at reading signs

Hi peeps,

I recently met up with my two good (female)friends who are on my course, usually i'm with my mate when we meet up, but for some reason it was just me and them this time.

One of the girls is usually (before the semester) quite reserved, but up for a laugh and quite fun to talk to. But we hardly ever touch except for hugs when the friends go different ways home.
This new term {and this day in particular}, she was very playful and touchy: i.e hitting me lightly, leaning on me, putting her leg next to mine so that it overlaps. The most 'unusual' thing was when she said her 'hands were cold' when we were outdoors walking home and she then grabbed and squeezed one of my hands (which I didn't mind haha).

So i'm wondering if any of it means anything? I'm quite clueless when it comes to this sort of thing. Is she hinting something?, or just being playful and friendly? (maybe she was quite excitable that day). We've been friends for about a year if that adds anything.

Thanks in advance. :)

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