User blog comment:Churchpants/Speculations for iOMG!/@comment-2246006-20110327163149/@comment-3276102-20110327203721

@ Serene Girl :

If Dan had done "iMake Sam Girlier" and then waited a while before bringing Pete back, it would have raised awkward questions about why Sam's boyfriend was never even mentioned by the characters in the intervening time.

So that was why it took such a long time for Carly and Freddie to meet Gibby's girlfriend. Sam met Tasha in "iSpeed Date," but it wasn't until eight episodes later ("iEnrage Gibby") that she came to the studio and met the others. The long gap in time was, I gather, because Dan Schneider wanted to avoid any possibility of those episodes being broadcast in reverse order.

It worked for Gibby and Tasha, because Gibby was just a supporting character, not a major focus of the series. If the relationship had been Carly's, Sam's, or Freddie's, there's no way they could go that long a time without at least talking about the character's significant other.