If not a Virgin you cannot be Consecrated a Virgin. As I understand it (have just read paragraphs 915-924; " Evengelical Counsels, Consecrated Life").
Nor could you be a Consecrated Widow (unles you are widowed?) since CV/CW are
"called by the Lord to cling only to him with a greater freedom of heart, body and spirit, have decided with the Church’s approval to live in the respective states of virginity or perpetual chastity “for the sake of the kingdom of heaven.” [CCC #922]
Now, remember, this relates to persons who have decided to take solemn vows before the Bishop, who has already given advice and spiritual direction in this matter.
The church, with some sense of reality, expects most of the rest of us to embrace the Vocation of marriage and family life through the most Holy Sacrament of Marriage.
However, as we are already dedicated to the Lord through Baptism, the person who surrenders himself/herself totally to the God we love thereby consecrates himself more intimately to God’s service.
CCC # 933 -
Whether their witness is public, as in the religious state, or less public, or even secret, Christ’s coming remains for all those consecrated both the origin and rising sun of their life.
Therefore one could dedicate one’s present state of life (single, chaste) to God by making a private vow/prayer to God. You would be making a sacrifice for the kingdom. Of course it would be necessary to live a suitably dedicated life; that is to say a life of prayer, penance, service to one’s fellow man, and apostolic activity eg. evangelisation, catechesis, etc.
