TO wear or NOT TO wear shorts around my male roommate?

I moved out of my parents' yesterday and for the first time living alone. or not exactly. im living with a roommate and he's a guy. We don't know each other but he seems like a nice fun college guy. We are both around the same age (early 20s).

sometimes i wanna go out to the kitchen or toilet but i always make sure i wear a bra before going out there. (I dont wear a bra in my room). But is it okay to walk around wearing short shorts? What are guys' opinion on this? Would you think the girl is trying to get your attention? Because i dont want him to think that.
TO wear or NOT TO wear shorts around my male roommate?
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