Letters to the Editor
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Why buy the cow when the milk is free?
I know it's sort of a crude expression, but it holds some truth in it. He isn't giving you a key because he doesn't want to marry or live with you. He get's what he wants from you without any pesky attachments like "keys". Leave him. Go back to your apartment and stop investing in a relationship that will never move on to the next level. He is a jerk and you are letting him use you.

