Why don't YOU start going out alone and make it be known that you ARE going out and changing your lifestyle. Start doing the things she supposedly ALWAYS wanted to do on your own.
While not inviting her, in a few weeks when she mentions your new active, single and alone social and cultural schedule (resentfully, which she will), drop the hint that she's free to join you and leave it up to her. You'll be going regardless with your male friends, relatives, and alone. Thus, it's not "about her" but implies that it could be.
