Ted Mosby 's relationship with Robin Scherbatsky in Last Forever was criticized by the critics along with the fate of the titular mother of the series .
`` It aired on March 31 , 2014 . `` `` Last Forever '' '' received a polarized reaction from both fans and TV critics , with a majority of critics expressing disappointment , primarily in regard to the relationship between Ted Mosby and Robin Scherbatsky , and the fate of the series ' titular mother . ''
Last Forever