I'm not married yet but I live with fiancefor 2 years I have 2 children and we have a problem

we share the bills and the house the cars I believe we are practiclly married just not legally. I love him but we are now having some problems he say I don't listen to him when he has suggestions for me about disciplining my children. That I alwyas wantr to be in control of the situation and I can't just relax and stop being a mom and do thingsf or me as a person. We had plans to get marriied i do want to get married but I think that he feels pressure about it I want to ask what should I do get married or look for couple therapist. I wan to be happy but I wan t my kids to be happy too.