Thanks for your question. It's good that you're trying to get your boyfriend to consider Jesus. I'll make a quick preliminary comment in response to your question. It is up to the author of a book to say what they think. It is up to the reader to decide whether they agree or disagree.
Christians actually believe.
I find lots of non-christians think they know, yet believe that a Christian is a good person. A gospel presentation like 'Two Ways to Live' may be helpful. You also might like to try going 'straight to the source' and reading some of the Bible together. Use a readable version of the Bible - perhaps the NIV or the Bible Society's Contemporary English version. The fact that your boyfriend is 'poking holes' in everything may not be a bad thing.