@op kindly followed the link that was provided thast your funds is still intact to confirm and also Dont forget to update us to know the latest thing about the situation at hand...
To further my likelihood of innocence:

He asked me if he can withdraw, I replied: "i was afk" (he at this point was still online), a few moments later I sent another message requesting a specific amount he'd like me to withdraw to a specific address ... He logged off at this point. You can't blame me for not replying whilst you only give me 2 minutes to do so, my reply was in under 2 minutes.
This is a grave accusations that should not be taken softly. It must be resolved...