Assuming you aren't a troll, I'd say two years is a pretty good running. I've tried keeping fuck buddy flings going that long and I couldn't. The max I got it going before the chick started following me around and asking me to pay for a new couch was a few months at a time. Out of all my friends, only one could do it. And she's a she, so it doesn't really count.
From what you have described, sounds like you are his Fuck buddy. Does he take you out places or just come over and screw you and leave? And by that I don't mean he takes you some place once a month or so, I mean do you guys go out often? You may not live that close and I get that, but if it's primarily he shows up, you guys have sex and then he books it after cuddling you for 2 minutes, then no, you are his FB and that's it. But ask yourself, are you okay with that? It doesn't sound like you have much of a relationship with this guy. So are you feeling taken advantage of? Do you like the sex? If that's all there is, is the sex would, you be good with that or are you wanting so much more? Ask yourself these questions and you'll know what to do.