It might be a feeling uneasiness. You don't know what to expect especially for those of us who have this sovereignty and freedom tech mentality. Asking yourself, "Will this relationship be similar to what it was?"

I'm only speaking from my own experience doing the same.

probably past disagreements

If they're normie, you may be anticipating disappointment & it's likely a valid presumption.

You’re an introvert that probably doesn’t prefer the conversations of topic with this individual ?

May sound weird.

I'd guess it's hormonal/neuro transmittoral .. dopamine or some other molecule already expended for other things.

Guessing not a great friend, just old? I dread most activities with people that stem from some feeling of obligation