Is this sign of depressive person?

My friends told me that he (dumper) hide all his facebook posts and pictures which is not like him. In November he deleted his Instagram account for a month and facebook for 2 weeks before he reactivated them again at the start of December. I don't know if this is sign that he’s depressed or something. Maybe dumper’s regret is starting to hit him?

Is this sign of depressive person?
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