My ex thought like this. There was a time when I was getting out of shape, working a desk job, generally depressed. She complained about gaining a few lb. I said "Hey, at least we aren't fat fat, we just gotta be a little proactive" and proceeded to make a meal/workout plan for myself to add to my mornings. She was offended as hell that I would even imply fat was "bad", and went on a nice long rant going over the usual bullshit reasoning; starvation mode, metabolism will slow down after 30, am woman so guaranteed to gain weight with age, you're saying I'm fat (after literally saying she wasn't fat, but would need to make some changes if she wanted to stay that way). I tried to shut that down but it was no good. I just didn't talk about my fitness goals, or our well being as a couple, with her after that. We couldn't talk about anything really without her taking it personally or pulling the "but I'm a woman you can't criticize that" argument. She left me for a fat mutual friend who it turns out has a reputation for being a "shoulder to cry on" for women in rocky relationships. She deserves everything that will come with that manipulative fuck. A decade of my life down the drain. But, you know, it's for the best. We were becoming very different people. On a side note, I'm in a lot better shape than I ever was living with her and I only pick up after myself now. Win win.