Try talking with the ones who make eye contact & have a more relaxed expression (if you can tell what that is) or on the shy side might be good. Simplest ways to avoid being a pervert are no body/sex comments or touching & backing off if they tell you to leave or seem uncomfortable. Start off with a simple "hi" or "hello", etc. after making eye contact.
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Balance is needed within the universe, can be demonstrated in most/all concepts/things. Black/White, Good/Evil, etc.
All dependent upon your own perspective in your own form of existence, so trust your own gut and live the way YOU want/need to.