Why would a girl keep coming back into my life?

A girl was into me in highschool and i was into her, but nothing ever happened. But through highschool we liked each other a couple of times and sometimes fall completely out of touch.

We are both in college now and didn’t speak for a while but somehow she randomly reaches out again.
Is she checking if she could still have me to be sure or something or do you think she never lost feelings because in a way I am still super into her.

Why would a girl keep coming back into my life?
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