If you don't believe that a woman was made from a man's rib, then your not a christian. Pretty simple really, you either obey the whole book or you're a faker.
Its really not that simple. Jesus told Peter, "If you love me, feed my sheep.".
How many people who profess a love for Jesus and claim to be christian do not feed sheep?
Are they all simply fakers or was the command to feed sheep never intended to be taken literally by intelligent people??
In the same way the story of Adam and Eve was never intended to be taken literally by intelligent people.
The story of Adam and Eve may not be history and it may contradict well know facts about reality, talking serpent, etc., but it conveys truth nevertheless, like the hidden moral of a fable, to all those with the intelligence to perceive it.