If two girls, say ages 7 and 8, are bickering and yah-yah with each other, a simple solution is to make them hold hands and look at each others' eyes until you count to ten. Very slowly. And if either one of them diverts their eyes or lets go of a hand, the counting starts over. It's pretty much guaranteed that by the time you reach ten they'll both be smiling if not giggling. Then it gets really silly because after that they have to hug each other and say, "I love you, sweet sister."
Same idea with your husband, but in a different way. Now, I'm not suggesting this be the solution to a meaningful argument, but if you're just bickering and yah-yah with each other, try kissing for 10 seconds. You'll see it changes the tone of things, even if you started out pretty irritated with each other. :)
Someone actually suggested that a husband and wife do the 10-sec-kiss thing everyday. We used to. I may have to make that my New Year's Resolution.