Churches or religious groups will often require couples to undergo some sort of premarital counseling before they can get married in the church. This generally serves two purposes: to ensure the couple is ready for the commitment of marriage and to educate them in the church’s beliefs regarding marriage as an institution. As a secular humanist, I have neither a church nor any requirements for counseling.
While counseling is not a requirement, I do think that talking with a trained counselor can be beneficial to just about anyone, including those preparing to get married. I am not a trained counselor but I can point you towards some resources to help you find a secular counselor, without making a specific recommendation, if you would like.