It was exactly six hours into my marriage when I realized how difficult being a stepmom would be. That was the moment my new husband placed his then 5 year old daughter in our honeymoon bed. Sure, we discussed the sleeping arrangements in advance. And, of course, when we were making plans I said yes-honey-whatever-makes-her-comfortable. So, there I lay on my wedding night, squished over to the edge of the bed, my husband laying between me and her, clenching my teeth.