I'm not married (yet), but BF has definitely gained a bit of weight since we started dating, thanks to me cooking for him He's working to drop a little bit of it, but that's his choice. I told him that it's his body and his choice and if he wants to try and lose weight, that's up to him.
I and my DH were married on 7/8/13. So not quite a year. There is probably a lot of other married couples on here with way more experience than we have under our belts.