I would let her go and not contact her. Then I would let it go psychologically, no matter how hard it sounds. If she comes back to you after this experience then you will have to decide whether to take her back or not, but I wouldnt count on it.

"Let it go" = the wisest words when it comes to attraction/relationships.

Yes, it wont be easy, yes it will hurt, but time will heal this. Time heals everything.