Homosexuality and the creation narrative

Andrew you say

“homosexuality is contrary to creation (in that sense a ‘distortion’), which is presumably……… the fundamental theological basis for differentiating between homosexuality and left-handedness: the lifelong intimacy of man and woman is central to the creation narrative and presumably has something to do with being in the image of God – left-handedness doesn’t appear to have the same significance”

I have 2 questions.

1. Could you elaborate on “the lifelong intimacy of man and woman is central to the creation narrative”. What do you see as being the other central elements of the creation? How do the Genesis accounts proscribe other than heterosexuality- there is no logical inconsistency in interpreting Gen 2.24 as leaving open the possibility that a man leaves mother and father for some reason other than to unite with a wife.

2. In what way does the lifelong intimacy of a man and a woman have something to do with the image of God; and why would lifelong intimacy of a man and a man (or a woman and a woman) not have something to do with the image of God?