Most Helpful Girl
Not all girls see their friends as potential partners. Plus, if you don't show interest the first time you meet them, then it's normal of them to consider you a friend and nothing more than that. As for you flirting with them and them not showing interest, maybe you're not doing it in the right way? Or you're coming across as pushy? I don't know.
Most Helpful Guy
A good relationship, is based off a fundamental framework of shared belief's, the greater your beliefs, the better the relationship.
continue an effort into finding people who share the way you see the world, and who would want to share the world with you for you.
Anything else is futile waste of effort, in the context of general relationship's, especially romantic one's.