Do girls sometimes avoid sitting next to a guy they possibly like?

Been noticing this girl for past 2 months now. She's a friend of someone I once met through another friend xD. I have caught her looking at me plenty of times, sometimes with her friend and her friend smiling after she mentioned of me. Anywho, today when I was in the library she sat with her friend opposite to me and few seats away. I noticed that she saw me. Some time later, I went to attend a call outside. When I came back, just before I sat I looked her way and she was already looking at me with really big eyes.

So, do you think she likes me... And why does she choose to sit at a distance than in front of me (the seats we vacant)? :D

Insights appreciated, thanks :D

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Do girls sometimes avoid sitting next to a guy they possibly like?
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