I was friends with my wife for awhile before we ever started dating, and we've been together as a couple for over four years. In all that time, we've only ever had ONE fight. And it was over something really stupid. She really dislikes facial hair and I was growing a goatee about a year after we got married. She complained about it and gave me a bad time for weeks over it. One night, after we'd already gone to bed, she made some joke that for some reason set off my Irish temper and I got up, went into the bathroom and slammed the door shut, locking it behind me. Once in there, I started up the clippers and proceeded to start shaving. She was banging on the door and PISSED that I was reacting that way to her joke. We stayed mad at each other for the rest of the next day and then made our peace.
Most of the time, though, we just talk through any differences we might have. We're usually on the same wavelength, anyway, and we get along so well that outside the joking and ribbing we might give each other, we don't really have friction in our relationship. And anyone who has to have "makeup sex" to keep their sex life interesting probably doesn't have much of a sex life to speak of to begin with.
And, yes, I stay clean shaven these days.
jag