A study of bride as scripture uses that word to explain God to us is a very fundamental, and complicated word. We must not limit our understanding so completely we say it is "Mary".
Jesus loves the Church as a man anticipating marriage to the woman of his dreams. He was willing to give His life to save hers.
Ephesians 5:25 "Husbands, love your wives, just as Christ also loved the church and gave Himself for her"
Spiritual understanding of this word takes in the entire book of Song of Solomon, understanding what God meant by the word "harlot" and the spiritual meaning of sex. It gets into the very fundamentals of understanding the spiritual world we live in.
I agree that we shoudn`t limitate ourselves to say that Mary is the bride of Jesus Christ; but since the opener searched for a woman as a bride of Jesus Christ, I said that it is Saint Mary and not the samaritan woman. But, you are absolutely right that beyond these appelatifs (bride, groom, marriage) lies a great mystery that reflects the marriage as relation between Jesus Christ and His church.
The NT is full of terms and syntagms that send to marriage:
Mt 9,15: Can the children of the
bridechamber mourn as long as the
bridegroom is with them?
Mt 25: Then shall the kingdom of heaven be likened unto ten virgins, which took their lamps, and went forth to meet the
bridegroom.
He have also the parable that compares the kingdom of heaven with a wedding, so, yes, we shouldn`t limit ourselves to give simplistic answers. Thanks.