I understand what you are saying.  Perhaps we have reached the point where we are just repeating ourselves.  We just disagree.  Nothing wrong with that.

However, your most recent response suggests a clarification on one point.  Your view is that "let no man put asunder" is "Jesus himself who's drawing the line".  My view is that Jesus was not drawing a line.  You seem to think there is no other possibility but line-drawing.  I disagree.  Reading Matthew 5 as a whole, it seems clear -- at least to me -- that Jesus was preaching the reign of God, an exhortation to a different way of thinking and being.

I say that notwithstanding Matthew 5:17.  Pious Jews followed all 613 commandments of the Torah.  Jesus taught a priority among these: two of them -- love of God and neighbor -- were "all the law and the prophets."  So I put this question: what commandment do you follow when "love of God and neighbor" conflicts with "let no man put asunder"?  Isn't this logic "OTHER than line drawing"?