I'll start out with the easiest one.

Dear Prudence,
I live with my boyfriend, who, in many ways, is a wonderful person—hardworking, smart, and funny. We are constantly butting heads over one thing, however. He is an extreme perfectionist. I’m not messy, but compared with him I’m a slob. He travels often for work, and lately I’ve found myself becoming anxious before he returns. He always notices if something has been put back in the wrong place, if I didn't sweep under the couch, or if I bought the wrong brand of detergent. I make checklists the days before he returns, but there are things I miss. He thinks everything should look the same as how he left it. Should I just hire a maid, or is he being unreasonable?