How do I (31M) tell my girlfriend (32F) that I would like if she lost weight?

I have been feeling similarly lately, but she won’t go to gym with, blaming her university, low energy anything that suits her. She won’t exercise at all. Won’t go running with me either. Any physical activity turns into an argument because the hills are too steep, the trail isn’t paved, literally anything. Also she doesn’t eat meat, eggs, fish- tries to lead a ,,better lifestyle “ by trying to eat ,,vegan” ( sometimes eats cheese), but she’s too lazy or ,,overwhelmed “ as she puts it, to actually cook anything healthy plant based. She rather chooses pastry, sweet meals which help her put on even more weight. We are 5 years together. I love her with every cell of my body. I can’t break up with her nor can I change the way she looks. Can’t confront her that’s for sure.

But is there something I can do? I am tired of listening to her about her insecurity with her body.

/r/askwomenadvice Thread