Together 3 years, she took a 2 week vacation then come home and broke it off

I spent 2 years isolated in Indiana for HER while she was in school. Sacrificed so much. Thought things were fine, but I was anxious a lot. Chalked it up to circumstances. Turns out she’d been “having a gut feeling” for months but waited until she graduated and passed her exams to break it off. 2 years of my life I’ll never get back. Fuck her. But also I miss her. And I want her back but she is “certain in her feelings and decision” but she was never certain about me.