AITAH for doing stuff without my gf again?

My girlfriend and I are in a 12 year relationship. We are both 32 and the one big issue in our relationship is that we have entirely different interests. She is extremely introvert and I am very extrovert. When I do something with friends I usually invite her and she always says no and most of the time she is annoyed that I won't spend time with her alone instead. There are two things my gf and I usually do together. Watching movies and shopping. I get exhausted fast when shopping and my gf sleeps in literally every movie we watch. After 12 years of this, I stopped caring. Everytime someone asks me if I am free for an evening I say yes. I still ask her if she wants to go, but I will not let the opportunity to do something I like slide, only to sit on the couch with her and not do anything for an evening. So AITAH for not being the ones making all the plane anymore and not saying yes to her all the time? It feels like I just claim a little bit of myself back after all this time.