Astrology book of the moment. Astrology book of the moment. Astrology book of the moment. This fact has been stated above. The 7th House is definitely the House of Marriage because Marriage is a big change.
Marriage is a major commitment and a new adventure in life for most people.
The difference between a relationship and a marriage is huge. Relationships just mean intimacy where as a marriage means legal responsibility, a totally different set of circumstances. Marriage is a very big change for everybody because the Establishment is now involved in your life. Lawsuits again have the Establishment involved in your life. Enemy's associated with the 7th House are a nebulas concept that probably has to do with unforeseen change that inevitably happens to people and which they incorrectly blame on someone, somewhere.