Getting your art career going and having a social life really go hand-in-hand. It takes a lot of networking to get your name out there as an artist, and the more people you know, the better you will do. If you want to keep your partner and pursue your goals, you might just have to stand up to him. What he’s trying to do, isolating the both of you, is really unhealthy. If neither of you hang out with anyone else, it puts a lot of pressure on your relationship. If something goes wrong, you won’t have an external support system. (What if you break up? If you don’t see anyone else besides each other, you’ll both be really lonely afterward.) I also always hear that one of the first signs of an abusive relationship is the abuser isolating the abused from their friends and family.
There are a lot of easy things you can do to get your art career and social life started. You should start by taking an art class, or even pursuing an advanced art degree if you can. If you go to art school, you’ll meet a ton of really cool, unusual people, and you can form relationships with your professors which could be really important to your future career. You’ll also have lots of opportunities to begin showing your work. A lot of student shows, especially thesis shows, get attention from newspapers and the general public.
If you can’t go to art school, start by taking an art class, especially a portfolio-building class. Some art schools also have an annual portfolio day, where you can come in for free and get critiques from representatives of different art schools. (The Corcoran offers one in the fall. It’s REALLY helpful.) Your portfolio is a body of your best work that you will show to all kinds of people- potential employers and buyers, especially. You should also start volunteering for art-related causes, which will open the door for you in the future.
Another good class is grant-writing. If you learn to write a good proposal, you can get money for the government or from charities to create your art, especially for public installations like murals or sculptures. (Then you can send a press kit to your local newspaper about the art you just created.) Another great thing you can do is make a joint project with other artists, or reach out to local businesses about showing your art.
In all these things, it would probably be easier to have the support of your partner, but you’ll probably be a lot happier if you start your career and social life, with or without him. Start small with an art class, and maybe see a couple’s counselor about his issues. Good luck!