You will forever feel lonely for as long as you continue to use this woman as a replacement of opportunities with others, whether you realize it or not. You are too emotionally invested in her, therefore will be emotionally detached to others.

I don't know your story and why you were advised to block her. If you don't see her as girlfriend material, forget wife or future possibilities. What you have now is not even a friendship. Perhaps emotional hunger? She's attractive, flirty, and you're lonely without her. Perfect recipe for a dysfunctional relationship, which includes friendship.

You asked how to move on, block her. It takes courage. Allow yourself the time to grieve. See a therapist or do some soul searching .. and when you're ready, date someone that's right for you. Don't get too caught up on looks. Make sure your new "beautiful woman" is just as beautiful on the inside.. and by that, I also mean that she's able to meet all your needs for the right reasons.