A believing woman is only under a man if she is married.
True,and it is according to God's will in how he conducts himself,and not his own agenda,and she has to listen to God if he is going to contrary to God's will.
Gal 3:27 For as many of you as have been baptized into Christ have put on Christ.
Gal 3:28 There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus.
In the Lord a man and a woman are equal regardless if they are married or not,but on earth the husband is to lead in the ways of God.