Ha, clearly.

Or, since dudes play games just as much as they complain WE do, he could have done it on purpose to kind of show you he's NOT putting effort into this, as a relationship.

Either way, if it's just a fwb and transactional...you're not worried about cultivating a 'relationship', then definitely set out your standards. YOu can say 'yeah...I'm not going back to your place unless you clean up. I'm not sleeping directly on a mattress and wiping crumbs off my skin. So, I'm sorry, but you either 'really' clean up this time, or we stay at my place.

You'll be able to figure out if/when you get tired of his laziness and always being the host.