I am new to the post and have a very similar situation as you do. Two very selfish spoiled stepdaughters; 24 & 20. My husband and I have known each other for 6 years, married for 4. We had a major incident two weeks before we got married and to be honest sometimes I wish I had walked away then. But we do love each other very much and with the exception of his daughters we have everything in common and feel we have met our soul mates. After we were married, we went to counseling because of the daughter and my husband basically closed his mind off because the counselor stated it just like it was, that he was not making the daughters understand that I now was a part of the family and that it was up to him to make sure that they respected me. For the longest time, I blamed the girls for their actions causing problems with my marriage, but after a while it dawned on me that it was not their fault as they were only doing exactly what they had been doing all their life, getting their way through lies and manipulation. It is how the parents react to them that is the issue. My husband is in complete denial about what his kids are doing to him. I cannot convince him of what is happening. Sometimes it takes someone completely out of the picture to make them see the truth. Although we did go to counseling, my husband shut out anything the counselor said becasue it was what he did not want to hear. He was placating me the entire time, and after three visits, he figured we were cured and we stopped going. We should have gone far more than we did to get to the root of the problem which is how my husband reacts to the manipulation. Although the girls do not live with us any longer, a different kind of manipulation takes place, the girls want him to go off to dinner with them without me, they call for money using excuses that it is for school when it really is for the current trip of the moment to NYC, Calif, Greece, etc. Dad does not question anything. I cannot say anything or I am criticized as finding only the negative things in the girls. I am going to buy the book Step Wars and emotional blackmail, read them and hopefully get my husband to read them. If that does not help, we will go back to a counselor and this time spend the time necessary to get him to learn a new way of handling his daughters and their deceptive ways. This is what I can advise you to do also. Otherwise, unfortunately things will not change and will only continue throughout your relationship. I sometimes hope that these girls will mature and things will get better but the oldest is 24 and things have only gotten worse..............Good luck with your situation, it is hard but as you can see you are definitely not alone! ;-)