Girls, Why does she keep walking up to me now that I spoke to her?

So me and a girl never spoke for months we just saw each other at the college gym. She would often stare at me every time she saw me. I would often check her out too.

However , often times she would just walk passed me like she was going to say hi. Then to just look to the ground. I noticed sometimes she would smile to herself around which was confusing.

So after 6-7 months of that , I spoke to her. However , I just walked up to her and faced her asking a question. I wanted to know if she was using something in the weights room. She started smiling to herself. And then afterwards she came up to me like three times and kept talking to me. It felt like she was making excuses but I thought nothing of it and was polite.

But now it’s back to normal again. She walks passed me with her head to her phone if she sees me. And then in the weights room , she keeps staring but doesn’t smile or say hi?
Girls, Why does she keep walking up to me now that I spoke to her?
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