My live in boyfriend got caught lying to me, so I'm giving him the cold shoulder. How long should he get the silent treatment for?

He was gone for hours yesterday and he made up some big lie about it, which he kept going into today. I didn't even ask where he was. He just blurted out all these things that stopped him from coming home. He knows I HATE liars, but he lies to me anyway. He blew it!!! Now I am back to not trusting him again. I should have never stopped trusting a well know liar! How long can our silent treatment last. I am very pissed at him.
My live in boyfriend got caught lying to me, so I'm giving him the cold shoulder. How long should he get the silent treatment for?
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