Happily Ever After?

I got to thinking today about how after two people are married they supposedly become "one" but with today's always changing society, how many people really get married and stay married "until death to they part"? This also got me to thinking if the human species is actually able to stay married to one partner in a monogamous relationship for their entire life. For example Romeo and Juliet are supposed to be the greatest lovers of all time, correct? What if Shakespeare had decided to let them live together happily ever after?  Would they really be each others for all time or would Romeo get bored of Juliet and find a new partner? Or would Juliet grow tired of Romeo's love. Not to mention we all do know Juliet was around 13 and Romeo was in his 20's.... can we all say statutory rape? I also read an article this week titled Why Disney Princess's are the Worst Role Models EVER.  In this the author states that all Disney Princess movies end with a marriage like that's the end of the affair, but really it's the beginning and this is a bad example to young girls. But is it really? Lately I've seen so many people married for years getting divorces because of a cheating spouse. It's like you can't get away from the idea of cheating spouses either, it's on TV shows, in the media, even in your own neighborhood! Honestly, it's like America is trying to make multiple partners the norm. So this leaves us with the question, are two humans of the opposite sex really compatible?