The R&B star turned himself into LA police on 8 February following the Grammys ceremony and booked on a charge of making criminal threats to the Umbrella singer.
Now Chris, 19, has released a statement apologising for the incident.
'Words cannot begin to express how sorry and saddened I am over what transpired,' it reads.
'I am seeking the counselling of my pastor, my mother and other loved ones and I am committed, with God's help, to emerging a better person.'
But Chris has urged his fans not to believe everything they read about him and Rihanna, 20.
'Much of what has been speculated or reported on blogs and/or reported in the media is wrong,' he adds.
'While I would like to be able to talk about this more, until the legal issues are resolved, this is all I can say except that I have not written any messages or made any posts to Facebook, on blogs or any place else. Those posts or writings under my name are frauds.'
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