I am a new step mother ( I have been married since July 2010). I have been having a some very unhappy feeling about my role as a step mother. Prior to getting married my SS would stay with his father occasionally. Maybe 2 weekends out of the month and usually only spent the day because my husband works at night. Once we got married my SS began spending EVERY weekend with us (including the nights). I had this vision that we were going to be one big happy family. My SS has a mother so I just saw myself as an extension of his family.