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The original was posted on /r/AmItheAsshole by /u/Least-Jacket3741 on 2023-07-18 03:44:15.

I 38f am married to Jack 44f. He has a daughter 21f Mia. Mia is engaged and is getting married next year. She wants to lose weight for her wedding, and is on a diet. Mia has always been on the heavier side, but her weight is healthy for her height.

She asked me to join her in her diet, and I agreed to help support her. Mia and I have never been close, and I saw this as a way for us to bond. I broke down a month into the diet though and gave up. I didn’t say anything, as I saw Mia lose weight as a result of this diet and noticed how much happier Mia was. I have a high metabolism and my work is stressful, so regardless of what I eat, my weight has always been consistant.

Last night at a family dinner, Mia complimented me and said I look slimmer. Jack made a joke about catching me eating fast food in the kitchen one night and I had to confess to Mia that I stopped the diet a few weeks ago but I didn’t say anything as I didn’t want to stop her progress and I saw how much happier she was being in shape. Mia left upset and hasn’t spoken to either me or Jack since.