I have been there a few times (to be specific, left wondering if feelings were imagined or real). A couple of times I eventually learned the answer: yes, the feelings were real on his side not just mine. I’m not going to lie: the validation was healing and appreciated.
But sometimes I have been left to wonder and the lack of closure can be difficult.
As an outsider to this relationship, she seems confusing AND confused. My mantra: Life is too short to spend on someone who isn’t going to appreciate his/her time with you.
I hope you find someone who thinks you are the best thing since sliced bread or Nutella or bitcoins (or whatever YOUR thing is).