Currently, with out a custody order neither of you have legal custody. Custody of the child is currently with you based upon the fact that your child "physically" resides with you. Moreover, because you were not legally married at the time of the birth, the father may or may not be the "legal" father of the child. Thus, with out being the legal father he may have no legal rights to the child with out establishing paternity. It is therefore, important to know if he is on the birth certificate and/or signed an acknowledgement of paternity . If he is the legal father, he certainly can assert, his parenting decisions are just as valid as yours. However, parenting in all cases is about the child's best interest. If it truly is not in the child's best interest to travel as described, it is incumbent upon you to fully explain and detail the basis to the father. If it becomes an issue or it is your belief that this will be the first of many differences that causes strife in the rearing of your child, court intervention may be necessary. It is my belief, it is best to come to a meeting of the minds with out court intervention. The help of an attorney to formulate a global stipulation may be the best answer to this and many other issues that will arise in the future.