It takes extremely weak faith to be swayed by silliness like this book. No practicing Christian is going to give a hoot about it.
Besides, the movie is failure, so just let the whole thing die on its own.
I have to ask, let's say Christ was married, so what? Jesus Chris came to earth and "became man." He thirsted, hungered, angered, cried, felt compassion and all the other emotions of man. Why not fall in love, marry and even father a child? This concept does not deter me in my love for Christ. As a matter-of-fact, it even makes his sacrifice that much more to me.