Nobody puts “incompatible bedtimes” on the list of reasons a relationship fell apart. It doesn’t make the highlight reel of big fights or defining moments. It’s more of a slow bleed, one person already asleep when the other finally feels like talking, someone watching TV alone every night because their body simply won’t shut down at 10 p.m. Small stuff. Until it isn’t. Research suggests that one in three couples are sleep incompatible, and a recent survey found that three in four couples regularly go to bed at different times. A third of them say it causes arguments. The arguments that don’t ever resolve because nobody’s technically doing anything wrong. Videos by VICE Robyn Alesich, a relationship expert at Sister Wives , says most couples never connect the dots. “Most couples assume relationship problems stem from communication or stress,” she told the Irish Mirror .…