My ex went back to his ex?

It’s only been a week since we broke up and he went straight to following his ex. I wanted closure and told him how I felt and he said she followed him the day we broke up coincidently.. I was heartbroken because he had told me while we were together he didn’t think of her or have any contact of her but the fact as soon as we break up he finds her again. He didn’t even care for hurting me he just blocked me after. How could he just throw everything away we had? I did everything for him and he picked his ex over us when he has never even met his ex he met her online a game before we dated in like 2015.

My ex went back to his ex?
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