Is it because you feel like you've got him comitted to you now, so you don't have to do stuff like that to make him want you anymore? My girlfriend hasn't swallowed in like 3 years. In fact, it seems like oral sex hardly ever happens once you are maybe a year or so into a committed relationship. What's up with that?
If only they realized how easy it is for me to go out to a bar and find a girl who will give head and swallow, maybe they'd think twice. Of course I'd never do it, I'm just sayin...