(20M) Is this flirting?

So I was hanging out with my ex at college today. And we were chilling listening to a fellow student performing some songs.

And at first everything was normal, we sat in front of each other. But she started to lightly tap my leg with her foot. And as quiet as it was kept, I didn't ask her to stop 😂.

She started by lightly kicking me and looking at me until I told her to stop. So that let me know she knew what she was doing.

Because after some time, light tapping turned into stroking her foot on my leg a few times. After that it stopped.

It was such a turn on, and I feel conflicted right now lol. Should I just not bring it up?
(20M) Is this flirting?
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