He has been accused but no charges have been filed as of yet. This could very well be someone trying to make a name for themselves by accusing somebody famous but with his history its not hard to believe.
If anything comes of this I can see Goodell giving this guy a permanent vacation from the NFL just to make an example of him. RG hasn't been playing around with repeat offenders and this guy is already suspended for this season because of the violations to the leagues substance abuse policy.
NFL.com - Cincinnati Bengals Team News