What is the name of your state? missouri
i am the step father of my wifes children and my question is can i sue the biofather for allienation of affectionbecause my wife has primary but joint custody, every time they visit or talk to him on the phone he tells them dont listen to him, make his life miserable, he's not your real father, etc.. which is making life here pretty miserable & at one time these kids all loved me very much, mutual i might add. thier good kids without thier fathers input, but turn into uncontroballe brats after any contact with real father. would greatly appreciate any help. hurting and confused in missouri

i only said real father because they say to me your not my real father. we have been married 7 yrs. & together for a year prior, met on one of our childrens scool field trip after they were divorced. we have 8 children altogether 3mine 4hers 1ours but love &treat them same. 4 grown & on own 4 at home. first everyone got along wonderful till father started telling them these things,and we have tried talking about problem with father wants to fight,children always seeing bio mom & dad argue. children and mom elect to get counseling to help deal with stress & learn ways to cope with constant manipulation from ex. much more to story but too much to post here.