Girls, What does it mean when a girl wears your sweater?

I work at a grocery store and the it gets pretty cold in there especially when we have to make our way into the fridge to get produce and stock milk etc. So my coworker has her own sweater, but today I saw her using mine (she mentioned how comfortable it was) and my friend says its because she may have a thing for me. What do you guys think? Would you borrow a guys sweater if you were not attracted to him?
Girls, What does it mean when a girl wears your sweater?
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