BOM, sad and hard as it might be seems like it's time to let go. Cinnamonsun might have hit on something that she was looking for emotional support through the divorce.
Something changed for her after the move. You may never know what, which is frustrating. She sounds like she does not want to continue your relationship.
All that said, don't give up on yourself. This does not have to be your last chance to dance. My mom's neighbor was in her 80s when she found love and marriage.