Stacey: First of all,

This is a great place for inspiration, understanding or a

if that's what you need!
Second,

Having a unsupportive mate can be the hardest thing for a diet. Topped only by calling it a diet! When we have so much to lose, the only thing to do is literally change how you live. It sounds like you are ready and willing to do just that, but you are getting sabotaged by the person who needs to be changing his lifestyle with you. I don't have that problem now, because my DH and I are doing this together. Sure we lead each other astray once in a while, but more often than not, all is well. I did have a problem similar to you in college though. My roommates and I were supposed to be dieting...more often than not we'd start out for aerobics only to end up at Pizza Hut!
The only advice I can think of is to NOT wait on your husband. You are going to have to take charge. Do you do the cooking? Then have healthy meals and snacks ready and waiting. Do you do the shopping? Don't buy junk! If he asks for it he'll have to go get it himself. Do you want to go work-out? GO! Maybe when he sees how good you are feeling and looking you'll become his motivation.
That's so easy for me to say and SO HARD to do! I know it isn't that simple, especially when you love someone and they say, "Don't go out, stay home and watch a movie with me." You feel like you
have to do what they suggest. Leading the way is way harder and way scarier than following along. Even when you are working at it motivation can be tricky. I'm struggling with motivation myself right now and I have tons of support at home.
BUT making even small changes can be a great start. I
know that is true! The fact that you are here shows you are willing to work at this. So, again, welcome!

I hope this site gives you all the insite and support you need.