@Vader I get you. I’m a mix between loving time by myself and doing nothing or speaking to hardly anyone but then I can be quite social too (less and less these days though - it’s just getting harder).
I used to get that feeling of after a while of hanging out with someone, whether it be a partner or some mates, there was usually a feeling of “I can’t wait to be by myself”. I’ve lived alone for many years now so it could stem from that. However, I can’t recall ever having that feeling with my current partner. You may meet someone where it changes those feelings. Although, we do not live with each other on a full time basis. But neither did I with my previous examples. Anyway, you’re normal in this regard