become one flesh

become one flesh

To join together with another person in marriage. Taken from the biblical verse regarding marriage, "And the two shall become one flesh." It can also refer to sexual intercourse in general, which is meant in Judeo-Christian beliefs to be withheld until after marriage. My longtime girlfriend and I finally got engaged, and we will become one flesh this summer. Many people choose to wait until they are married to become one flesh with someone.See also: become, flesh, one