'Husband to be' in the Bible

Sarai, Abram's wife, took Hagar the Egyptian, her handmaid, after Abram had lived ten years in the land of Canaan, and gave her to Abram her husband to be his wife.

Wail like a young virgin clothed in sackcloth, lamenting the death of her husband-to-be.

And Jacob fathered Joseph, the husband to be of Mary, of whom Jesus was born, who is called Christ.

Now Joseph, her husband [to be], being a man who did what was right, and not wanting to make a public spectacle out of her, decided to break off their engagement privately.