Is NOBODY wrong in the post ? POST : Me and two girls were video chatting. I tend to flirt with one of them playfully so, I flexed my bicep to her (weird way to put it but whatever). She replied by saying imagine needing to go to the gym to have a good physique. So I replied with imagine needing to diet to get to average weight. The thing is she got very mad at me for saying that and didn’t talk to me for 3 days. 

She has commented about how she was insecure about her weight before but I never really thought much of it. 

So I messaged her saying if she was mad and we argued a bit about I made her feel. 
The thing is me and my friends always roast each other about our biggest insecurities so I never thought much about how it can make a person feel in a bad way. 

Anyways I apologized but continued to argue my point. She said I understand that but girls don’t take jokes like that about their insecurities.

So AITA?

(First time posting on this sub, sorry for any format errors)