Was it wrong for me to agree that my sister is fat after she kept complaining about it?

My younger sister kept complaining to herself that she is fat. Always bitching and complaining about it but she isn’t doing anything about it. The thing is, she isn’t fat. She is curvy and thick. She has a very attractive figure that most females would die for. Not a lot of women or girls wanna be thin. They want to be full figured. Anyways she would cry and complain to me about being fat. I mean she’s been eating a lot of ice cream when she denies and she binge eats a lot. She put on weight. After all that complaining, I got fed up and said, “Since you keep saying your fat, I’m just going to say it to your face, I guess you are then!” She had a shocked look on her face. She yelled, “Excise me?”. I said, “Yeah you heard me. I said it. You are fat.”

Then she got an attitude saying, “I can’t believe you’re calling me that! You’re supposed to say, “No you are not fat. You’re perfect.” And yelled all bunch of BS to me so I shot right back, “Then stop bitching about about it and do something about it! YOU kept bringing it up. YOU said it, not me!” I mean what did she expect, for me to lie to make her feel better? I mean she isn’t doing herself any favors but eating herself or death and making poor health choices.

She yelled at my face that I was cruel and mean. I told her to back off of me and she’s the one that’s self sabotaging herself and I’m just kind enough to call her out in her BS. Was I wrong for calling her that when she kept calling herself to get her to stop?

Was it wrong for me to agree that my sister is fat after she kept complaining about it?
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