I never have, simply because HE will not follow a diet! And he NEEDS to lose weight. I feed him healthy food and have managed to reduce the amount of leftovers but he still eats/drinks additional high calorie foods between meals. Drives me nuts!
We've tried to diet together but with dh's crazy schedule it didn't work out very well, plus he hates chicken so that limits my lean protien choices when I'm cooking for us.