Work problems

lightmeupxx
So, I work at my college in the student life office and I feel like my boss treats me differently than the other student workers. I work at the front desk and I was sitting on the desk talking to one of the other workers and she comes in and tells me its unprofessional to sit on the desk bc then ppl will think it's a hangout and not a work place and I just feel like she said something bc she doesn't like me. It's a school, I don't see how I was being unprofessional. Idk, what do you guys think?