As a tangent, "one flesh" always means actual flesh and bone and not a euphemism for coming together(at least in my reading so convince me I am wrong otherwise it stands) in joining the bodies.
Based on Gen.29:14, 37:27; Lev. 18:6; Judg. 9:2; 2 Sam. 5:1, 19:12-13; Neh. 5:5; Isa. 58:7, the word is begging to be translated "family".