All that dancing and laughter—weddings are a lot of fun, but being married isn’t always a piece of cake. (Sometimes it’s more like the frosting chunk that went up your nose during the smash—good intentions, but wrong outcome.) There’s actually a lot of work that goes into living “happily ever after,” so whether you’ve been married for years or just tied the knot, we asked the experts what couples can do to have a happy marriage. Follow their helpful tips for a stronger, healthier and…