I have some fairly bad social anxiety, therefore I always try to avoid any kind of social interaction, no matter whether it's with a stranger or friend.  However, during times when I'm really sad over something (like holding back tears sad), I suddenly seem to just quit overthinking entirely, find myself starting conversations with strangers, talking more online in personal chats, not venting, just general calm coversations about life, minor things, etc. It feels really elevating to be social and relaxed like this, but once I actually cheer up again I'm back to hiding from the world. Even on days that I look and feel my best, I don't experience nowhere near the amount of confidence I get on some of my saddest moments in life.
So yeah, this feeling is hard to describe and it might sound weird, but I'm just genuinely curious whether anyone else experiences this, and if so, do you have any theories on why this happens?