It's hard not to obsess about this a bit, especially if you're doing well and you really want your significant other to do the same. I try not to pester my wife about it as it really does no good. There is no way you can "force" another person to make the commitment to change their lifestyle.
I agree that the forums here are a good outlet for what we have to say. I also have a co-worker who has changed her lifestyle and we enjoy having our lunches together and talking nutrition.
47 M 5'8"
May 4, 2010...... 440? lbs. (Start FitDay Size 60 Jeans)
June 19, 2010.... 393 lbs. (First Weigh-in)
June 19, 2011.... 229 lbs. (164 lbs. gone in one year :-)
Current Weight... 185 lbs. (Size 36 Jeans)
Next Goal 169 lbs. (07/04/12)
Ultimate Goal 165 lbs. (12/31/12)
The best exercises for weight loss are Fork Putdowns and Table Pushaways.