An error in the wording of an email address, will do cross in the painting a man and a woman who, without this chance, should never have to cross. Will follow amount of mail, since the novel is that of that, with all the ingredients that know those who met one day "love" on the internet, the dramatic passion, the desire to meet the other while fearing to lose the magic, the power of the feelings multiplied, etc etc ...
So yes, the author was able to recreate the world of wonder if that special relationship can be created on the Internet; yes, he succeeded long to keep us in suspense and make us love these two people; moreover, I think it takes too much on the string of I-want-you-see-but-no-not-again-this-oh-damn-do we-are-forgive-missed that- to-later etc., so that the end of the novel is slowing somewhat.