So it was a graduation ceremony and I congratulated everyone I knew there. But when my GF saw me congratulate my past fling she was mad. I assured her in the past multiple times that I have moved on, and my relationship with that girl is all gone, it isnt on my head or anything, I have completely moved on. I unfriended her in all of my socials and things. But when I took a picture with my friends, the girl went and took a picture with us, of course after congratulating all of my friends, I congratulated her. Now my girlfriend is mad at me. I assured her multiple times that it was nothing but a simple gesture. But she is still mad at me. What should i do?