Well I hate exercises, getting all sweaty, but I must confess I started to enjoy going to the gym! It takes some time, though, I think for me it took almost a month for me to go out of pleasure instead of obligation. So your hubby should keep insisting and hey.... why don't YOU join the gym either? When I joined, some weeks later my boyfriend joined too and we go together, one motivates the other... it can really make a difference!
You know why, because you feel more energetic, less tired, and when you are stressed it seems to release it! While you are there sweating and feeling a little irritated by that, you are burning some calories...
If you are on a hurry to shed some pounds, apart from the exercise, there is an option that I would call emergency option... it's not a very nice diet to go into but it really works if you want to be in it for just a couple of weeks NO MORE! It's called Atkins, you probably heard of that. The one you cut out most of the carbohydrates and stick to fruits, veggies and proteins... it makes quite a fast effect.
Last advice: never compare yourself to your future hubby because men lose weight easier (usually) than us women, so, don't feel guilty if he starts to shed the pounds and you take longer!