Okay, that is a stretch. Wouldn't Freddie at least tell Sam or Cat that he was dating Carly? Why would he cover it up to them? They would mention it on the show if Freddie was Carly's boyfriend.
We need to stop being in denial here about what Dan did to Creddie. Neither Creddie or Seddie was endgame in canon. I watched the episode.
credit:creddie-forever