This thread is fascinating. When DH and I first moved in together, I realised that while we are both slobs, I was less slobby than him. I found myself doing more cleaning because I found things (kitchen, bathroom) unacceptably dirty before he did. He cooks almost every night (though we both enjoy cooking, he finds it a great way to unwind from work and I'm happy with that), but that meant I was almost always washing up. Washing up is less fun than cooking by a long chalk. So we had a chat about it all (when I got ranty one day about why was I doing everything, did his penis stop him seeing dirt, etc).
Our problem was to do with learned behaviour and expectations, I think. He grew up in a pretty egalitarian but v. messy and chaotic household. I grew up in an old-school patriarchal setup, DM does everything to do with housework, DF sits in front of the telly (and occasionally unloads the dishwasher, to a chorus of 'you're so god!'). Hence I was wanting a cleaner house than I was willing to actually create, but still feeling guilty-and-then-cross about it!
Now we have a cleaner. I LOVE her! She comes twice a month and hoovers, dusts, cleans everything - and while I may still be a bit of a student, I find that level of deep cleaning acceptable, while we both keep on top of wiping up/ clearing away stuff during the week. (We both work but I work from home 2 days a week, so I tend to do a bit more tidying / bunging stuff in the slow-cooker on those days).
I'm 21 weeks pg and in the first 10-12 I couldn't do a damn thing. Suddenly DH was in charge of all list-making, food buying, all washing-up and bin-emptying, and all laundry (we have to carry the heavy baskets up and down 4 flights of stairs to the machines in the basement). I think he started to notice what a lot more I was doing than him. Since I've been feeling better I've taken up more housework again, but I've definitely taken back less - and it's good for us. It's like I'm actually letting myself put my feet up more, now I'm pg. Perhaps because he's encouraging me to do it. I hear about the nesting thing, but I seem to have got slobbier. Or I'm just more tired. . . Ok, that was a long rant which basically sums up as "My standards have slipped and DH does more: I love it!"