Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Open marriage

It's wonderful that a book of this nature is available to those of us who have realised that monogamy is a myth. Having decided that there is more to life than a not in love (as opposed to loving) husband who was non-monogamous, this book makes for wonderful, reassuring reading that I'm not crazy, that Polyamory is a natural part of growing.