My long distance boyfriend said he is "totally sentimentally off"' when said I love him. Then he went silent, ignored me. It is already a week. Why?

We were in long distance relationship for 3 months and dated before in the same country for 3 months.
My long distance boyfriend said he is "totally sentimentally off"' when said I love him. Then he went silent, ignored me. It is already a week. Why?
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