Cynical about relationships

I usually don't pay that much attention to Hollywood drama but one article that shocked me on MSN news yesterday had the headline: Reese and Ryan Split! I gasped. I love Reese and they were one of my favorite Hollywood couples. They just seemed so cute and so stable. They didn't have all this drama attached, or so it seemed. Now they split, after seven years of marriage (one of the longer ones in Hollywood) and a few adorable children. I wonder what caused them to ultimately break the tie? They must have had serious disagreements for a while to consider breaking seven-years. The whole thing had me thinking (and still sort of thinking) about relationships in general. Can couples stay happy forever, or for a very long time? What in a relationship makes someone realize that they don't want to be with a person? Do people get bored? I have always been somewhat cynical about relationships but I still have a pretty protected and hopeful heart. The true happily-ever-after stories are rare, maybe too mushy gushy gross, but seriously, they make me smile.