If a girl you dont know that well puts her hand on a guy’s belly and gets very close while talking, is she interested?

I asked my sister and she said that it’s a very intimate thing to do, and the biggest giveaway that this was a hint is that she did that when she doesn't even know me that well.

If a girl you dont know that well puts her hand on a guy’s belly and gets very close while talking, is she interested?
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