My boyfriend told me he wasn’t sure I was “the one” for him until after we broke up? is this normal?

We were together for about 8 months and prior to that, we had been friends for a good four months or so. But I knew he loved me and he showed it. However, we broke up because he said some mean things and I told him I was done with him and now it’s been three months since we’ve broken up and everyday he’s been trying to get me back and he says he is absolutely sure of me now and knows that I’m the one for him. Is this normal?
My boyfriend told me he wasn’t sure I was “the one” for him until after we broke up? is this normal?
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