I know this must be upseting to you, but try to keep your cool.
Guys are weird, period. At least he is talking to you in some manner and not just closing off and going out to look elsewhere so take it as a serious sign. Guys usually don't communicate well and this might be the best the poor thing can do, remember he is a male.
Now, If it were me, I would probably say something to the effect of "great idea baby I've been meaning to talk to you about how inefficient you've been lately in bed" but then I can be mean and that wouldn't be very mature and probably wouldn't help matters! LOL but if he was not nice about it, don't let him get away with it either.
I have been with someone who is a porn addict and it's not a good thing. But from your post it doesn't sound like that is the case. He may just be wanting to spice things up a little or even just see how you would react. Don't do anything you're uncomfortable with but try to see it from his point of view too. Just remember you are just as entitled to satisfaction and pleasure as he is and don't let him make you feel like it's all your responisiblity.
Paula