Do you want to know if you are ready to marry someone? Do not live together.
The research is clear. Cohabiting couples have lower levels of commitment, higher break up rates, and for those who do go on to marry; higher rates of divorce. Cohabiting doesn’t help you know if you are ready to get married any more than dipping your toe in the shallow end of the pool helps you to know whether or not you can swim. Take God at His word and trust Him. Keep your objectivity by not cohabiting and saving sex until marriage. That way you’ll make more solid decisions for your future.