Am I being stupid?

Recently I've really realized that my girlfriend's and my relationship has taken a turn. Yeah it's gotten a bit meh, and I take what blame is mine. Let life and depression really get to me. I digress, I used to get her flowers quite a bit and leave her little notes and all that. It was hard but we finally talked and she finally opened up and told me about what she missed and all that. So I've started back writing little notes and getting flowers, because I realized I lost me and in turn lost us. However, I've also realized I slowly stopped because she never really returned the sentiment. Like yeah I don't want flowers but little notes are the nicest thing to see or something along those lines. I don't know, maybe I'm just being stupid. I just remember feeling like I was doing all this, basically courting her all the time and she basically stopped trying. She used to get me cards and fill them with stuff. Now I get one on special occasions and that's about it.
Am I being stupid?
Post Opinion