Sex isn't all about the orgasm. Really, it isn't. There could be a million and one reasons why your boyfriend didn't ejaculate, but that doesn't mean he isn't enjoying what's happening. Make sure that you're communicating while you're intimate, talking openly about what does and doesn't feel good is always a positive thing.
Don't let yourself get stressed out over this 'quest for orgasm'. Relax.
*And just as I side note, I hope you're practicing safer oral sex. Condoms and dental dams, and lube are very important in keeping both you and your partner safe!*
Want to know the goddess? Read the kittenblog!
"Never insult an alligator until after you've crossed the river." ~Oriental Proverb