I don’t believe religion condones it but at the same time from an ethical standpoint I don’t feel comfortable not ‘allowing’ them to be together..
Talking of ‘mental illness’ psychiatry is not an exact science.. As someone who comes from a family of psychiatrists I know a lot of things which were considered perfectly fine or acceptable twenty or thirty years ago are no longer acceptable now as psychiatry has changed and evolved, partly down to science + research and partly down to societal influences..
In Nazi Germany and South Africa under apartheid weren’t people in interracial relationships considered ‘abnormal’ as well?