He wants to keep you because you are a good catch. He likes sex with you. He likes that you contribute financially, and will have a good income. But he wants to train you to understand that everything has to be his way. If wants reassurance that you understand that and agree to that. When he told you to leave and you did, he was testing if you will do as you're told. You passed that test. There will be more and more tests. He will tell you each time if you pass.