2) Maybe he realises that coming on here and saying "No I didn't" isn't going to do an awful lot to stop you posting.
3) Maybe he's waiting for a proper chance to answer this, ie. in identifying you and bringing it to court, one way or another.
Just so you know, I'm not saying I defo know your accusations are untrue, but I do know for sure that this is not the right way to go about things. So, to repeat myself, shut the fuck up.