I'm really new to the forum too and so I am hesitant to give any advice but here it goes......
I too have a hubby that can lose or gain when and how he wants. It disgusting. But I realize he is a male and his and my metabolism are comletely different. Try not to compare yourself to your husband. You and your hubby have completely differnt bodies and they work very differently. I think if we just focus on our accomplishments we'll feel better in the end.
Have a great day!!!!

- tskako