Ended 3 years situationship? But I miss him a lot why can’t I let go?

I met this guy 3 years ago, I even lost my virginity to him. We were seeing each other on and off throughout the 3 years there were a lot of fights because i wanted more, he’d lie and say we were on the same page but his energy didn’t match. Recently I broke it off and changed my number he ended up reaching out to me via ig it’s been 2 months and I miss a lot I’m always thinking about him why is it so hard to let go and move on?

Ended 3 years situationship? But I miss him a lot why can’t I let go?
Post Opinion