It's usually what brings on the initial attraction but sometimes it takes only knowing the person for 30 seconds to realize their looks won't be able to compensate for the type of person they are.
Most desirable, least reliable
True but there has to be an initial spark to get the fire going. Hopefully it ends up warming your house instead of burning it down. :)
I'd do anything for the most beautiful woman … I might not have the motivation to impress an unattractive lover