Of course you're starving, thorton. YOU JUST BIKED 12 MILES, at a good speed too.

Nothing wrong with needing to snack at the end of the ride. If you don't, and if you don't give yourself enough fuel, you will find your riding will start to become more difficult...which means you will ride less...which means you will lose less weight.

Snack to assuage the post bike hunger. Just don't binge on un-healthy stuff. And don't worry about your snacking somehow setting back your weight loss plan...maybe you slow it down just a touch, but you'll be able to continue on this road in a healthy manner. Which means you'll stay with it, and reach your end goal.

Simple sugars and junk like that are obviously not the snacks to go for. Perhaps some fruit (I snack on Sunmaid figs when looking for a compact high energy pick me up, otherwise oranges and bananas), whole grain something or other, and don't forget to throw in some protein. It sounds like you have lots of leg strength, but help yourself out with building your new muscle.

Maybe after your ride would be a good time to just get dinner. An earlier dinner is good for weight loss anyway.

Keep at it thorton. You're the man, and incidentally your commute times practically put me to shame. (And I'm a 150lb lightweight!)