I have a 15 year old step-son that I have been with his mother for eleven years in February. I often question whether I feel in love with him or his mother first. I adopted him shortly after my daughter was born. Problems started about the time that my wife and I were having some problems when he was about twelve and he told her that he was leaving with me when we were having issues and I chose to leave for a few days to give us some space(my wife and I). She said no way he wasn't even my kid in front of him and he wasn't going anywhere. Anyway he is the most disrespectful, manipulative, lieing, stealing, argumentative kid I have ever seen I really don't know how things have gotten to this point but it's horrible. My wife and I have had to fix a lot in our relationship because we made mistakes that young people often do when they start a relationship. But he is our main hurdle now and I fully admit my wife and I are somewhat to blame but this kid is horrible and getting worse all the time.