The term bridegroom is an eschaton title. The Church being the bride of Christ is always personified in the feminine (Rev 12.13-17). The Church, which is her members must remain vigilant, to be ready to receive the groom when he returns for her. This is what the parable of the 10 virgins is about. The wise virgins will be the ones to enter the bridal chamber, that is they receive the crown of victory, which is prefigured in the crowning of holy matrimony.
The bridegroom is a futuristic concept because in holy week we enter into that future. Its echoed throughout the service of the bridegroom on Holy Monday:
"Behold the bridegroom comes in the midst of the night, and blessed is the servant whom he shall find vigilant; and unworthy is the one , whom he shall find heedless. Beware therefore, O my soul, not to be borne down with sleep, lest you be given up to death, and be shut out of the kingdom...
"Brethren, Let us love the bridegroom and prepare our lamps with care, shining in virtues and true faith. That like the prudent virgins of the Lord, we maybe ready to enter with Him into the wedding feast; for the bridegroom, as God, bestows a gift to all, the incorruptible crown."
Having realized, O my soul, the hour of the end. and remembering the cutting down of the fig tree, work therefore most diligently, O wretched soul, with the talent, which has been given to you, in vigilance and crying aloud, "May we not remain outside the bridal chamber of Christ".