The fact that we can become accustomed to anything, however disgusting at first, makes it necessary to examine carefully everything we have become accustomed to.
The first principle from which stems the moral of about all people at all time; it is summarized in this precept: Love thy neighbour as thyself, and: do as you would be done by.
I've definitely had a few moments in my life where I've seen somebody and it's blown me away at first sight, but I guess of those few scenarios, none of them have been like... I'm not married.