What you did was be great in bed. I know they seem informed, but Three 6 Mafia was not speaking for all men when they insisted they'd rather get some head.
I'm not really sure why, precisely, so many women are convinced the blowjob is the ne plus ultra of the sexual experience for men, but it's not. Some guys love them, some guys enjoy them but don't need them, and, believe it or not, a few guys actually hate them. Every guy is different. Your boyfriend loved blowjobs because they were the only sex he could get. Once you started having sex, he found something he enjoyed more. It's only natural.
I can see this being a problem if you enjoy going down on him more than you enjoy sex. That's a rare situation, of course (and yes, it does exist outside of porn), but if that's the case, tell him what you need sexually and he should be happy to comply.
One more thing: "two birds with one stone?" Really? Tell him from me he needs to be a bit more romantic and/or sexy when talking about sex. Sheesh!
Be thankful. I used to enjoy giving them. Now my husband constantly asks for them. I decided to use them for currency. BJ if you (meanial task here). It gets things done. =)