Our current marital conflict has to do with sharing the bed.
My husband and I never disagreed on Family Bed contractual stipulations.
1. Nursing infants - always permitted, if anyone in the household intends getting sleep.
2. Toddlers -- limited access, allowable under the following:
a. Thunderstorms.
b. Nightmares, especially when you accidentally let him catch a glimpse of a cinematic ax murder and you thought he wasn't paying attention.
c. Parents too exhausted to carry him back or even notice he climbed in
3. Family bed officially over when both parents stiffly wake clinging to opposite sides of the bed frame, a child's body spread horizontally between them.
4. Thereafter, sleeping bags on the floor only in the event of puking, croup, or fever.
Since our children no longer find comfort (or, in the case of siblings, amusement) sticking their feet into someone else's face, we're working on an agreement regarding the cats, Scratchy and Itchy.
I admit I am a pack animal, sleeping blissfully with Scratchy against my chest, 14-pound gelatinous Itchy morphed around my feet, and my husband at my back. We are long past the bothersome kitten phase of pawing your nose or nibbling your toes after depositing toy (and occasionally, living) mice in the blankets.
Trained to discard their nocturnal nature, the cats maintain their assigned positions throughout the night, unless removed. If I have a stomachache or leg cramp, I might shift one up or down a few inches, acting as hot water bottles. Sleepily scratching their ears activates the massage feature.
Also, to their credit, they disregard cat common law requiring rubbing against anyone allergic or adverse to feline presence; they never encroach on my husband's side of the bed. Still, he believes interspecies sleeping arrangements unnatural and unhygienic. I point out how much we save on energy costs, turning the thermostat down.
We're test-running a couple times a week catpile compromise. When I open the bedroom door after a Cats Night Out, they are seated like sphinx bookends outside, staring at me indignantly for excluding them from negotiations.