IMHO unless you are married or planning on getting married, you've answered your own question. Time to move on, my friend. If she really wanted you, she tell you. Sounds to me like she's done and finished. Not trying to be cruel, just telling you what I see.
Here's a thought: what if you said to her "I think we might have taken this as far as it's going to go and we should consider parting ways as friends..." you'll get your answer right there. My GUESS is she'll say "yeah you're right" in which case, painful tho it may be, and with all the love you've had, it's time to move on.
Not sure if that's any help, good luck!