Why are girls so warm?

So I was sitting next to a cute girl on the bus. We talked a little because we go to the same college. Anyway, when we were sleeping, our legs touched for a while. Sometimes, our arms touched. But I don't know if she knew she our arms/legs were touching, but I did!

She felt so warm! I felt pretty happy lol. Do girls notice stuff like that?

After our ride, we just talked a little and parted our ways.
Why are girls so warm?
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