The euphoria of falling in love with our new babies is intoxicating. For me it was such a dominant force, that for a while it overshadowed everything else in my life, including my marriage. I took our marriage for granted, assuming it was strong enough to withstand any challenge. And it is incredibly resilient, but when a baby comes along we're tested like never before. Small cracks in a relationship may grow into colossal chasms and threaten the foundation of our precious family units.