Social stuff is generally quite predictable, but that's not to say predictable so therefore easy to suss...
It can be tedious and fatiguing... and create much paranoia... can be so draining and turn you into a zombie sometimes... social stuff can be fantastic, or pretty horrible...
It tends to remain pretty conservative the social situations... confirming what I mean by predictability - if you are stuck in a rut and can't at a time find a way around it, then it sucks... it's gonna stay the same for a day or 2 or whatever until you change the situation...
If it's going well, again predictable - it can keep on rolling successfully.
As for relationships well... that's a little different: -
It's not at all predictable... but, in a sense, kinda similar to social situations, it can be your best friend or your worst enemy...
Of course I have a lot less experience on this matter and I am currently not in a relationship so I can't give much of a strong oppinion on this matter like I've given on solely social situations lol.
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Thousands of candles can be lit from a single candle,
and the life of the candle will not be shortened.
Happiness never decreases by being shared.