Should I end my friendship with this girl?

Either end it or withdraw ALL attention to her for AT LEAST 2-4 weeks. Believe 1/2 of what a woman tells you and believe 100% of what she does. Typical people are cowards when confronting people so sometimes they string them along to avoid hurting someone's feelings. You are in her "friend zone" so hanging out with you is NOT a priority to her. She might use you as a backup (aka social life preserver) but don't expect to get much attention from her. A man's attention to a woman is a gift. If a woman shows she does not value that gift then withdraw the gift and give it to another woman. And repeat....until you find a woman who shares a connection with you. And during that 2-4 week time be VERY curt with her if she sends you a text message. Try for 3 words or less and be the 1st to END the conversation...but do it with a smile on your face. Better yet...Feed the EXACT phrases to her that she uses on you to blow you off. Perhaps with a slight twist so she does not immediately recognize what you are doing. When it comes to woman, knowing which ones NOT to chase is as important as knowing which ones are worth chasing. If she does NOT start kissing your *** after 4 weeks of withdrawing attention then that means you are not getting out of the "friend zone" so cut your losses and move on. Youth is a precious gift. Enjoy it...and to maximize your enjoyment don't waste it on women who are unworthy.