Not getting why does she buy me stuff?

I like her but not sure how she feels. She buys me stuff I'm talking food and drinks not expensive things. She never buys things for her other guy friends, if they ask she just tells them they can get there own. I don't ask her for stuff, most of the time I refuse completely when she offers but no matter what I say she gets me stuff any way. She has introduced me to many of her girlfriends, she hasn't done this with her other guy friends. She has known the other guys for a few years but me only for a month or little longer. She makes sure I notice her but have seen her just let other guy friends walk by, if they don't notice her. Not sure how she feels, can provide more details if it helps.
Not getting why does she buy me stuff?
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