You've put your finger on the issue. Outwardly displaying extreme emotion about everything, as a norm, inherently makes it seem like people who restrain themse

You've put your finger on the issue. Outwardly displaying extreme emotion about everything, as a norm, inherently makes it seem like people who restrain themselves from displaying emotion (or grievances) do not have any. Or none of any importance. A stranger behaving in this way can trigger memories of what's it's like in a real life relationship where there is a mismatch.