I've been truly happy for a few brief moments in my life, but it's been a while.. not sure how well I remember the feeling(s).

I am not sure.

When Max Verstappen crash (possibly not on Vettel)

i knew, now i feel it very rarely

Yes, but I forget sometimes.

like cumming, :)

Everyone has at least one happy memory. So, yes.

I'm not even sure if happiness is real.

Yeah but its been a while since I was last truly happy. Since then I have at most felt momentarily satiated.

yes, but sadly that feeling never lasts very long

Sure, I have books all about it

i know the feeling