Simple- YOU don't eat out. My husband LOVES to eat out- but I don't do it- so he can either go alone or stay home with me and eat the nutritious dinner I make. He chooses to stay home with me.
I used to eat out cuz my husband wanted to and I wanted HIM to be happy-but then I was like what about me? Is it going to kill him to eat a better meal? Nope- and it's healthier for him as well as myself!
Don't get me wrong- we do eat out 1-2x a week, but healthier places I can go to.
I hope your hubby doesn't give up- men can lose easier than women and maybe his doctor can give him a diet he can follow- like Atkins or South Beach