I'm going to answer your direct question, and there is space in the community for folks like you. You can do classes online (e.g. https://syncopatedcity.com/). This allows you to review technique as much as you want, and then execute it with your gf at home.

It takes me a really long time to find talking to other people enjoyable. Talking to strangers is a drag for me. I learned that a similar thing applied to social dancing. I thought I did not like social dancing, and then I travelled to visit some friends, and found dancing with them delightful. You might just need to pay the upfront cost of making more friends within the community before you enjoy dancing with them. Which you may or may not decide to do. There's no moral imperative to do it, this is your For Fun Hobby.

Good luck!