When my ex and I divorced 3 years ago my children were less than 5 yrs old. When she remarried and they grew older they began calling her new husband "Daddy Dave" and began refering to me as "Daddy Ken". I live in another state, visit as often as I can possibly afford and want a healthy relationship with my children. I also do not want my children growing up believing that her new husband is thier actual father.I told my ex that I would like it if she would correct my children if they are confused and feel that it is disrespectful to me that my children are calling me "Daddy Ken" and calling her husband "Daddy-anything". Just recently I very carefully explained to my children that they only have one real Mommy and one real Daddy and even though we may not live in the same house that noone else can take the place of thier real Mommy or Daddy. They reassured me that they understand that I am thier "real" Dad, but it is just easier to call him Dad instead of Step Dad. Is there anything else that I can do or say to my ex or perhaps my children in order to correct this? Aside from feelings of betrayal and disrespect on the part of my ex should I still be concerned or will my children eventually outgrow this?

Well depends how old are your children, but when they grow up around at 15-16 years they will understand all this if you continue visiting them.. Just continue talking with them, take them out to ice cream or something and everything will be fine.. I agree with you, real father can't be replaced. ;)