Relationships don't die on their own. They end because one or both partners fail to invest the time, energy, and effort to sustain them. They put everything before the relationship -- work, chores, kids, hobbies -- and are then left wondering why things took such a bad turn. A relationship can't maintain itself. Just because you've been with someone for 20 years, share the same interests, or you're convinced nothing could ever tear you apart doesn't mean it can't go down the tubes. If both partners aren't actively contributing to the relationship, they can drift apart in no time, potentially opening the door to drinking, depression, cheating, and other circumstances that can put the relationship on a downward spiral from which it may never recover. On the flip side, those who genuinely want the relationship to remain strong never cease doing the little things -- the love notes/texts, a surprise dinner here and there, a kiss upon waking up and bef...