Yep, and if weight really is a serious problem, you can lead by example and try to bring her along to your workouts/hiking trips/whatever.

You sound like a man who has never had a significant other.

Try calling a woman "slightly over weight" and see how that goes.

Yeah, it's easily a relationship-ending level insult.

Yep, it's honestly much worse than being called fat. I just needed an example she could empathize with.

This is the male equivalent of being called fat.

Even if a woman bluntly asks you to comment on her weight, is it appropriate to call her fat? No it is not. Same with this, it's just too hurtful. It's "bring a grown man to tears" level of hurtful.

You need to shower this man in love and affection for the foreseeable future. Make him feel fucking beautiful, and don't say another word about your exes.

There is only one good reason to get a PhD: because you want to further our understanding of the field.

So do you want to further our understanding of the field, or do you want to build cool things and make lots of money?

I'm not saying you can't build cool things and make lots of money with a PhD, but I AM saying it's probably not the optimal path for someone with those goals to take. Your lifetime earnings will likely be higher if you just do ML engineering rather than ML research, and you'd spend more time building useful things that way too.