Grant Gustin

Grant Gustin (gsarts.net)

Looks like Kurt and Blaine’s relationship is about to hit a rock pretty soon.

The rock is in the form of Grant Gustin, who will join the “Glee” cast as Sebastian, a Dalton Warbler and potential love interest for Blaine.

More bad news for the adorable gay couple, Sebastian is described as the male version of Santana (Naya Rivera).

Gustin is no stranger to musical, as he has several theater credits before, including “West Side Story.” He will first appear in Episode 5 of the third season, which is currently on air.

Well then… watch out for Sebastian, Kurt and Blaine!

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