Is it common for depression that a guy acts social at work but completely depressed with friends (not responding to messages, isolating)?

Just wondering if it’s depression or something else as we are worried for him. He has a job in which he has constant contact with people and also a very social team with which they often do things together. Atmosphere on the work place is relaxed and they often have client events in the form of parties. As much as we know, he’s still “normal” at work. But with friends he has been acting completely depressed, doesn’t answer to messages, completely lost interest to do things he liked and the few times he hangs out with us he acts bored and grumpy and goes home earlier. Just wondering if he just hates us or if this is common… actually most of the time he takes the excuse ha focusing on work when saying he doesn’t want to hang out. And he has mentioned before he consider his colleagues good friends. So maybe he just decided he doesn’t like us and wants to hang out with them…

Is it common for depression that a guy acts social at work but completely depressed with friends (not responding to messages, isolating)?
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