Step daughter’s graduation

A few weeks ago it was my step daughter’s graduation and the graduation ball. I was not invited. GF chose to not bring me and her ex did not bring anyone. I am fine with that. Although, nothing was said to me about it. I was simply told. Daughter’s graduation, you won’t see me that weekend. I thought it was weird. I can’t even tell you what my GF wore. I was not talked about anything even as a conversation, excitement for the graduation. Nothing. So this morning I see a picture on my step daughter’s dresser of the graduation. My GF had her wedding bands on. Is that weird??