It has always been the fantasy. To meet the man or woman of your dreams and to live blissfully together until death do you part. Problem is that half of all marriages end in divorce. And yes, I know that according to some, this particular statistic isn't all that accurate, but the truth is that breaking up is, at best, a painful process, and most of us have had more experience with it than we care to remember.It has been known for a very long time that those in healthy marriages or long-term relationships have lower mortality rates and better immune systems, and now scientists are attributing lower stress levels to those fortunate enough to be in loving committed relationships. So who wouldn't want love with benefits like a longer life and soul-warming affection?Well, once you've had a bad...