I feel you enabled him and allowed his online persona to flourish. There were people - myself included for a brief while - who truly believed ya'll were actually dating/fukking. You did nothing to dispel these rumors for MONTHS.
Once that act got stale/the kitchen got too hot, you turned on him on some "IT WAS ME AUSTIN! IT WAS ME ALL ALONG!" shyt. Serious heel turn.
I know everybody on the forum is riding your clit now and sees you as some kinda hero, but I think it's bullshyt. You preyed on someone who obviously has issues because it made you the talk of cyber town, but when the batteries ran out of juice, you recharged by going over to the Sith and pledging your allegiance to Darth Coli.
In a way, I see you as far more sinister than Sierra ever was. At least he never went out of his way to truly hurt anybody.