What does it mean when a guy says you're good but you're not good for me?

My boyfriend broke up with me he told me that I am a good person and that he loves me as in he has love for me like he cares about my well being but he is not in love with me. He also said that I'm good but I am not good for him.

What does it mean when a guy says you're good but you're not good for me?
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