I am Jack's moral dilemma.

My roommate cooked this huge dinner for him & his girlfriend last night. The dishwasher was mostly full when he started, so he loaded it up with a couple dishes and started a wash around 11PM. Then he went with his girlfriend back to her place, leaving behind a rather messy kitchen with dishes, pots & pans everywhere. I emptied the dishwasher this morning, re-loaded it with some of the stanky stuff that was sitting in the sink all night along with some of the pots & pans, and I'll still have to run another load to get all of his stuff washed. The kitchen is still a mess with spatters & powder everywhere.

Now the question becomes: do I clean up after him because I realize that he has a limited amount of time with his girlfriend because she's working nights this month and he also works and doesn't have a whole lot of time to clean up while I do, or do I leave it be for him to clean up since it was kind of a dick move for him to create a mess and then leave without even a cursory sponging and I shouldn't feel the need to clean up after him since he's 28 and able to do it on his own?