Matthew Henry in his commentary on Genesis

"Eve was not taken out of Adam's head to top him, neither out of his feet to be trampled by him, but out of his side to be equal with him, under his arm to be protected by him, and near his heart to be loved by him."

Men are called to love their wives sacrificially and selflessly just like Jesus loves the church. Wives are instructed to follow their husbands just as the church obeys Christ.