How long do you get tired of your new car? Your job? Your new house? Your best friend? Your spouse? There's a limit to a human's love for everything and anything. Loss of interest happens to everybody. It's called boredom. The marriage institution is a invitation to failure. Remember what Danny DeVito said as a lawyer in the "War of the Roses" movie. "The biggest cause of divorce is marriage." Don't get married. Just live with 'em. Separate when your interest wanes. Take financial responsibility for the children's welfare.