Most Helpful Girl
Is she fearful of intimacy/commitment or is she just trying to ease the blow of rejection? That's the part you have to figure out. You may need to be direct with her about your feelings.
If it's fear of commitment, try to address her fear. Have some patience.
If she's simply rejecting you, let her go. It will be difficult (if not impossible) for you two to remain friends. Don't contact her, delete her (or at least unfollow her) on Facebook , etc. I'm sure it hurts like HELL right now, but you will only extend the pain by keeping her in your life. You will heal with time, I promise.
Believe me, I've felt the same. We were just about in the "honeymoon phase" when my first love broke my heart and pushed me away. Refusing to let me go completely, he regularly crawled back into my life periodically only to offer me crumbs of affection. He destroyed my emotional life for over a year. Don't let this happen to you.