My wife is overweight (200 lbs.+). A couple of years ago in January she started a fairly intense diet. I, on the other hand had retired from the military reserves, where I had a lot of trouble maintaining my weight. I was "letting go" and she was dieting. I had a bit of fantasy of gaining weight, which I did, while she tried to loose. She gave up because the dieting made her miserable.
6 years