How to deal with this situation?

This girl has been flirting with me and has been sending me signals lately that she is single. However, one of her friends had asked her how her boyfriend was doing that goes to another college that is an hour away. She just responded Ok to her friend's question. After this, I decided to ask if she was single and her response was that she was dating a guy, but that they are not in any relationship.
How to deal with this situation?
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