Why do I have a heavy heart after a breakup?

My ex and I broke up 3 weeks back, there was a lot of fights as we were in LDR. I begged to fix things and he just made up his mind that we should move on and prioritize peace. It hurts so much, how can someone who claims to have loved you more than anything be okay with just leaving. Why couldn’t he just find one reason to stay. Any attempt I made to just be civil has been a let down. He got more mean. I’ve blocked him on every social media and decided to move on. Does pain get easier😔 I’m just so tired of dating. I’m at a point that being in a relationship and get hurt again terrifies me. Honestly it gives anxiety.

Why do I have a heavy heart after a breakup?
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